network 3.2.9.0 → 3.2.10.0
raw patch · 20 files changed
+6376/−5297 lines, 20 filesdep +Win32
Dependencies added: Win32
Files
- CHANGELOG.md +38/−0
- Network/Socket.hs +84/−4
- Network/Socket/Address.hs +4/−0
- Network/Socket/ByteString.hs +16/−1
- Network/Socket/ByteString/IO.hsc +47/−0
- Network/Socket/Cbits.hsc +28/−0
- Network/Socket/Internal.hs +7/−4
- Network/Socket/Options.hsc +43/−0
- Network/Socket/Posix/HostName.hsc +25/−0
- Network/Socket/STM.hs +52/−4
- Network/Socket/Shutdown.hs +33/−49
- Network/Socket/SockAddr.hs +11/−0
- Network/Socket/Syscall.hs +31/−1
- Network/Socket/Types.hsc +27/−0
- Network/Socket/Wait.hs +227/−0
- Network/Socket/Win32/Cancel.hs +109/−0
- Network/Socket/Win32/HostName.hsc +39/−0
- configure +5426/−5230
- network.cabal +8/−2
- tests/Network/SocketSpec.hs +121/−2
CHANGELOG.md view
@@ -1,5 +1,43 @@ # CHANGELOG for network +## Version 3.2.10.0++* Multicast support+ [#614](https://github.com/haskell/network/pull/614)+* Support for getHostName+ [#621](https://github.com/haskell/network/pull/621)+* Adding acceptWith, recvWith, recvFromWith, recvBufWith and recvBufFromWith, which take an STM action+ beside the operation and let the caller give up on it without closing+ the socket or interrupting the thread, and withReadable, which they are+ built from.+* Adding isClosedSocketError and isTransientAcceptError, which name what+ an accept loop has to tell apart: a socket closed under it, one queued+ connection which failed, and the rest.+* On Windows, the Winsock error code is kept in ioe_errno rather than+ dropped. Winsock reports every error as OtherError, so the code was+ the only thing telling them apart and it was only in the description.+ isClosedSocketError and isTransientAcceptError read it, so an accept+ loop there now stops when its socket is closed and retries a+ connection the peer gave up on.+* gracefulClose waits for the peer's FIN through recvBufWith, which is+ one code path on every platform, and drains what arrived before it up+ to 128 KiB rather than reading once: data left unread makes close send+ RST. It therefore keeps to its timeout on Windows, where+ System.Timeout cannot cut a receive short and a peer which stayed open+ and silent used to hold the caller for as long as it did.+* gracefulClose reads its timeout as the milliseconds it is documented+ to be without an event manager. System.Timeout takes microseconds, so+ it was a thousandth of what was asked for.+* On Windows, a datagram socket hears an ICMP unreachable which a send+ of its own caused only once it is connected, as on POSIX. Winsock+ reports it to every datagram socket, so one reply bouncing off a+ client which had gone ended a server's receive loop; socket turns that+ off and connect turns it back on.+* The readiness based waitReadSocketSTM and waitWriteSocketSTM cannot+ work on Windows, where completion ports report that an operation has+ finished rather than that one could be started, and now say so+ instead of blocking forever.+ ## Version 3.2.9.0 * Exporting recvBufNoWait.
Network/Socket.hs view
@@ -112,7 +112,6 @@ getAddrInfo, -- ** Types- HostName, ServiceName, AddrInfo (..), defaultHints,@@ -170,7 +169,12 @@ DontFragment, RecvIPv6HopLimit, RecvIPv6TClass,- RecvIPv6PktInfo+ RecvIPv6PktInfo,+ MulticastIF,+ MulticastTTL,+ MulticastLoop,+ AddMembership,+ DropMembership ), isSupportedSocketOption, whenSupported,@@ -333,6 +337,10 @@ getNameInfo, NameInfoFlag (..), + -- * Host name information+ getHostName,+ HostName,+ -- * Low level -- ** socket operations@@ -391,7 +399,20 @@ -- * Special constants maxListenQueue, - -- * STM to check read and write+ -- * Event polling+ -- $eventpolling++ -- ** Giving up on a blocked operation+ withReadable,+ acceptWith,+ recvBufWith,+ recvBufFromWith,++ -- ** What a given-up operation can fail with+ isClosedSocketError,+ isTransientAcceptError,++ -- ** Waiting for readiness (POSIX only) waitReadSocketSTM, waitAndCancelReadSocketSTM, waitWriteSocketSTM,@@ -399,8 +420,12 @@ -- * Deprecated withSocketsDo,-) where + -- * Multicast Group+ MulticastGroup (..),+)+where+ import Network.Socket.Buffer hiding ( recvBufFrom, recvBufMsg,@@ -413,6 +438,11 @@ import Network.Socket.Handle import Network.Socket.If import Network.Socket.Info+#if !defined(mingw32_HOST_OS)+import Network.Socket.Posix.HostName(getHostName)+#else+import Network.Socket.Win32.HostName(getHostName)+#endif import Network.Socket.Internal import Network.Socket.Name hiding (getPeerName, getSocketName) import Network.Socket.Options@@ -422,8 +452,58 @@ import Network.Socket.Syscall hiding (accept, bind, connect) import Network.Socket.Types import Network.Socket.Unix+import Network.Socket.Wait (+ recvBufFromWith,+ isClosedSocketError,+ isTransientAcceptError,+ recvBufWith,+ withReadable,+ ) #if !defined(mingw32_HOST_OS) import Network.Socket.Posix.Cmsg #else import Network.Socket.Win32.Cmsg #endif++-- $eventpolling+--+-- A thread blocked on a socket is stopped here by being told, not by+-- having the socket closed under it and not by an asynchronous exception+-- thrown into it. Each of 'withReadable', 'acceptWith', 'recvBufWith'+-- and 'recvBufFromWith' takes an 'Control.Concurrent.STM.STM' action+-- beside the operation; whichever settles first decides, 'Left' when the+-- caller gave up and 'Right' when the operation completed, and an+-- operation which has completed wins a tie. They are for one reader at+-- a time, and 'withReadable' says what else they ask of the caller.+--+-- The other two ways are going away or gone. A close ends a wait only+-- because the event manager tells the waiter so, which 'GHC.Conc.closeFdWith'+-- is to stop doing, and a descriptor number is reused; an asynchronous+-- exception does not reach a thread blocked in a socket call on Windows+-- at all.+--+-- A server loop which is told to stop, rather than having its listening+-- socket closed under it:+--+-- > stopping <- newTVarIO False+-- > -- the shutdown handler runs: atomically $ writeTVar stopping True+-- > let loop = acceptWith sock (check =<< readTVar stopping) >>= \case+-- > Left () -> return ()+-- > Right (conn, _) -> forkIO (serve conn) >> loop+--+-- A receive which gives up on a deadline, where 'System.Timeout.timeout'+-- cannot cut one short:+--+-- > late <- registerDelay (milliseconds * 1000)+-- > r <- recvBufWith s buf size (check =<< readTVar late)+--+-- The 'Control.Concurrent.STM.STM' action is run more than once, so it+-- has to be a test rather than something which takes what it reads.+--+-- Readiness, which these are built from on POSIX, is not available on+-- Windows: completion ports report that an operation finished, not that+-- one could be started. The four readiness functions say so rather than+-- blocking for good, and what runs there instead is the operation itself,+-- on a thread of its own, cancelled with @CancelIoEx@ when the caller+-- gives up. "Network.Socket.ByteString" has @recvWith@ and+-- @recvFromWith@ for 'Data.ByteString.ByteString'.
Network/Socket/Address.hs view
@@ -9,11 +9,14 @@ connect, bind, accept,+ acceptWith, -- * Sending and receiving ByteString sendTo, sendAllTo, recvFrom,+ recvWith,+ recvFromWith, -- * Sending and receiving data from a buffer sendBufTo,@@ -29,3 +32,4 @@ import Network.Socket.Name import Network.Socket.Syscall import Network.Socket.Types+import Network.Socket.Wait
Network/Socket/ByteString.hs view
@@ -32,15 +32,23 @@ -- * Receive data from a socket recv, recvFrom,+ recvWith,+ recvFromWith, -- * Advanced send and recv sendMsg, recvMsg, ) where +import Control.Concurrent.STM (STM) import Data.ByteString (ByteString) -import Network.Socket.ByteString.IO hiding (recvFrom, sendAllTo, sendTo)+import Network.Socket.ByteString.IO hiding (+ recvFrom,+ recvFromWith,+ sendAllTo,+ sendTo,+ ) import qualified Network.Socket.ByteString.IO as G import Network.Socket.Types @@ -89,3 +97,10 @@ -- 'SockAddr' representing the address of the sending socket. recvFrom :: Socket -> Int -> IO (ByteString, SockAddr) recvFrom = G.recvFrom++-- | 'recvFrom' which the caller can give up on.+--+-- @since 3.2.10.0+recvFromWith+ :: Socket -> Int -> STM a -> IO (Either a (ByteString, SockAddr))+recvFromWith = G.recvFromWith
Network/Socket/ByteString/IO.hsc view
@@ -29,6 +29,8 @@ -- * Receive data from a socket , recv , recvFrom+ , recvWith+ , recvFromWith , waitWhen0 -- * Advanced send and recv@@ -45,10 +47,13 @@ import Data.ByteString.Unsafe (unsafeUseAsCStringLen) import Foreign.Marshal.Alloc (allocaBytes) +import Control.Concurrent.STM (STM, atomically, orElse)+ import Network.Socket.Buffer import Network.Socket.ByteString.Internal import Network.Socket.Imports import Network.Socket.Types+import Network.Socket.Wait import Data.ByteString.Internal (create, ByteString(..)) import Foreign.ForeignPtr (withForeignPtr)@@ -276,6 +281,47 @@ str <- B.packCStringLen (ptr, len) return (str, sockaddr) +-- | 'recv' which the caller can give up on. Whichever settles first+-- decides: 'Left' when the 'STM' action fires, 'Right' when data+-- arrives. Data already waiting is taken without blocking at all and+-- so wins over a caller which has given up, as a completed operation+-- does in 'Network.Socket.withReadable'; the give-up is read there+-- and nowhere else.+--+-- @since 3.2.10.0+recvWith :: Socket -> Int -> STM a -> IO (Either a ByteString)+recvWith s nbytes giveUp+ | nbytes < 0 =+ ioError $ mkInvalidRecvArgError "Network.Socket.ByteString.recvWith"+ | otherwise = do+ bs <- createAndTrim' nbytes $ \ptr -> recvBufNoWait s ptr nbytes+ case bs of+ Just b -> return $ Right b+ Nothing -> withReadable s giveUp $ recv s nbytes++-- | 'recvFrom' which the caller can give up on.+--+-- @since 3.2.10.0+recvFromWith+ :: SocketAddress sa+ => Socket+ -> Int+ -> STM a+ -> IO (Either a (ByteString, sa))+recvFromWith s nbytes giveUp = withReadable s giveUp $ recvFrom s nbytes++-- A read which never waits: 'Nothing' when nothing is there yet.+createAndTrim' :: Int -> (Ptr Word8 -> IO Int) -> IO (Maybe ByteString)+createAndTrim' nbytes f = do+ (len, bs) <- allocaBytes nbytes $ \ptr -> do+ len <- f ptr+ if len > 0+ then do+ b <- B.packCStringLen (castPtr ptr, len)+ return (len, b)+ else return (len, B.empty)+ return $ if len >= 0 then Just bs else Nothing+ -- ---------------------------------------------------------------------------- -- Not exported @@ -343,3 +389,4 @@ let bs' | len < siz = PS fptr 0 len | otherwise = bs return (addr, bs', cmsgs, flags')+
Network/Socket/Cbits.hsc view
@@ -13,6 +13,34 @@ #if defined(mingw32_HOST_OS) wsaNotInitialized :: CInt wsaNotInitialized = #const WSANOTINITIALISED+-- | Whether a datagram socket reports an ICMP unreachable which came+-- back from an earlier send. Winsock turns it on by default.+sioUDPConnReset :: Word32+sioUDPConnReset = #const SIO_UDP_CONNRESET+-- | What closesocket gives a call already blocked on the socket.+wsaEINTR :: CInt+wsaEINTR = #const WSAEINTR+-- | What a socket operation gives once the socket has been closed.+wsaENOTSOCK :: CInt+wsaENOTSOCK = #const WSAENOTSOCK+-- | What accept() gives for a connection the peer gave up on. Winsock+-- names WSAECONNRESET where accept(2) names ECONNABORTED.+wsaECONNABORTED :: CInt+wsaECONNABORTED = #const WSAECONNABORTED+wsaECONNRESET :: CInt+wsaECONNRESET = #const WSAECONNRESET+wsaENETDOWN :: CInt+wsaENETDOWN = #const WSAENETDOWN+wsaENETRESET :: CInt+wsaENETRESET = #const WSAENETRESET+wsaENETUNREACH :: CInt+wsaENETUNREACH = #const WSAENETUNREACH+wsaEHOSTDOWN :: CInt+wsaEHOSTDOWN = #const WSAEHOSTDOWN+wsaEHOSTUNREACH :: CInt+wsaEHOSTUNREACH = #const WSAEHOSTUNREACH+wsaENOPROTOOPT :: CInt+wsaENOPROTOOPT = #const WSAENOPROTOOPT #else fGetFd :: CInt fGetFd = #const F_GETFD
Network/Socket/Internal.hs view
@@ -61,9 +61,9 @@ import Control.Exception (evaluate) import System.IO.Unsafe (unsafePerformIO) # if __GLASGOW_HASKELL__ >= 707-import GHC.IO.Exception (IOErrorType(..))+import GHC.IO.Exception (IOErrorType(..), IOException(..)) # else-import GHC.IOBase (IOErrorType(..))+import GHC.IOBase (IOErrorType(..), IOException(..)) # endif import System.IO.Error (ioeSetErrorString, mkIOError) #else@@ -93,13 +93,16 @@ -- | Like 'throwSocketError', but the error code is supplied as an argument. ----- On Windows, do not use errno. Use a system error code instead.+-- On Windows the code is a Winsock error code rather than an errno. It+-- is kept in 'ioe_errno' all the same: Winsock reports every error as+-- 'OtherError', so the code is the only thing which tells them apart. throwSocketErrorCode :: String -> CInt -> IO a #if defined(mingw32_HOST_OS) throwSocketErrorCode name rc = do pstr <- c_getWSError rc str <- peekCString pstr- ioError (ioeSetErrorString (mkIOError OtherError name Nothing Nothing) str)+ let ioe = (mkIOError OtherError name Nothing Nothing){ioe_errno = Just rc}+ ioError (ioeSetErrorString ioe str) #else throwSocketErrorCode loc errno = ioError (errnoToIOError loc (Errno errno) Nothing Nothing)
Network/Socket/Options.hsc view
@@ -18,6 +18,7 @@ ,UseLoopBack,UserTimeout,IPv6Only ,RecvIPv4TTL,RecvIPv4TOS,RecvIPv4PktInfo,DontFragment ,RecvIPv6HopLimit,RecvIPv6TClass,RecvIPv6PktInfo+ ,MulticastIF,MulticastTTL,MulticastLoop,AddMembership,DropMembership ,CustomSockOpt) , isSupportedSocketOption , whenSupported@@ -396,6 +397,48 @@ pattern RecvIPv6PktInfo = SockOpt (-1) (-1) #endif #endif // HAVE_DECL_IPPROTO_IPV6++-- | Multicast interface.+#ifdef IP_MULTICAST_IF+pattern MulticastIF :: SocketOption+pattern MulticastIF = SockOpt (#const IPPROTO_IP) (#const IP_MULTICAST_IF)+#else+pattern MulticastIF :: SocketOption+pattern MulticastIF = SockOpt (-1) (-1)+#endif+-- | Multicast TTL.+#ifdef IP_MULTICAST_TTL+pattern MulticastTTL :: SocketOption+pattern MulticastTTL = SockOpt (#const IPPROTO_IP) (#const IP_MULTICAST_TTL)+#else+pattern MulticastTTL :: SocketOption+pattern MulticastTTL = SockOpt (-1) (-1)+#endif+-- | Multicast loopback.+#ifdef IP_MULTICAST_LOOP+pattern MulticastLoop :: SocketOption+pattern MulticastLoop = SockOpt (#const IPPROTO_IP) (#const IP_MULTICAST_LOOP)+#else+pattern MulticastLoop :: SocketOption+pattern MulticastLoop = SockOpt (-1) (-1)+#endif+-- | Add membership.+#ifdef IP_ADD_MEMBERSHIP+pattern AddMembership :: SocketOption+pattern AddMembership = SockOpt (#const IPPROTO_IP) (#const IP_ADD_MEMBERSHIP)+#else+pattern AddMembership :: SocketOption+pattern AddMembership = SockOpt (-1) (-1)+#endif+-- | Drop membership.+#ifdef IP_DROP_MEMBERSHIP+pattern DropMembership :: SocketOption+pattern DropMembership = SockOpt (#const IPPROTO_IP) (#const IP_DROP_MEMBERSHIP)+#else+pattern DropMembership :: SocketOption+pattern DropMembership = SockOpt (-1) (-1)+#endif+ pattern CustomSockOpt :: (CInt, CInt) -> SocketOption pattern CustomSockOpt xy <- ((\(SockOpt x y) -> (x, y)) -> xy)
+ Network/Socket/Posix/HostName.hsc view
@@ -0,0 +1,25 @@+module Network.Socket.Posix.HostName (+ getHostName,+)+where++#include "HsNet.h"++import Foreign.C.Error+import Foreign.C.String+import Foreign.C.Types+import Foreign.Marshal.Array+import Network.Socket.Info (HostName)++foreign import ccall unsafe "gethostname"+ gethostname :: CString -> CSize -> IO CInt++-- | Get name of current host+--+-- Since: 3.3.0.0+getHostName :: IO HostName+getHostName = allocaArray0 size $ \cstr -> do+ throwErrnoIfMinus1_ "getHostName" $ gethostname cstr (fromIntegral size)+ peekCString cstr+ where+ size = 256
Network/Socket/STM.hs view
@@ -1,24 +1,72 @@-module Network.Socket.STM where+{-# LANGUAGE CPP #-} -import Control.Concurrent-import Control.Concurrent.STM+-- | Waiting for a socket to become ready, through STM.+--+-- This mirrors @select@\/@epoll@ and is __POSIX only__: Windows+-- completion ports report that an operation has finished, not that one+-- could be started, so there is no readiness to wait for. All four+-- throw there. What runs on Windows instead is+-- "Network.Socket.Win32.Cancel", through 'Network.Socket.withReadable'.+--+module Network.Socket.STM (+ -- * Waiting for readiness (POSIX only)+ waitReadSocketSTM,+ waitAndCancelReadSocketSTM,+ waitWriteSocketSTM,+ waitAndCancelWriteSocketSTM,+) where++import Control.Concurrent.STM (STM) import Network.Socket.Types-import System.Posix.Types+#if !defined(mingw32_HOST_OS)+import Control.Concurrent (threadWaitReadSTM, threadWaitWriteSTM)+import System.Posix.Types (Fd (..))+#endif -- | STM action to wait until the socket is ready for reading.+--+-- __POSIX only.__ On Windows this throws: completion ports have no+-- notion of readiness. Use 'Network.Socket.recvBufWith', or one of+-- the other operations which give up, instead. waitReadSocketSTM :: Socket -> IO (STM ()) waitReadSocketSTM s = fst <$> waitAndCancelReadSocketSTM s -- | STM action to wait until the socket is ready for reading and STM -- action to cancel the waiting.+--+-- __POSIX only.__ See 'waitReadSocketSTM'. waitAndCancelReadSocketSTM :: Socket -> IO (STM (), IO ())+#if defined(mingw32_HOST_OS)+waitAndCancelReadSocketSTM _ =+ ioError $+ userError $+ "waitAndCancelReadSocketSTM: Windows completion ports do not "+ ++ "provide readiness notification; use recvBufWith or "+ ++ "Network.Socket.ByteString.recvWith instead"+#else waitAndCancelReadSocketSTM s = withFdSocket s $ threadWaitReadSTM . Fd+#endif -- | STM action to wait until the socket is ready for writing.+--+-- __POSIX only.__ On Windows this throws. Completion ports give no+-- way to ask whether a send would block, and none is needed: issue+-- the send and let it complete asynchronously. waitWriteSocketSTM :: Socket -> IO (STM ()) waitWriteSocketSTM s = fst <$> waitAndCancelWriteSocketSTM s -- | STM action to wait until the socket is ready for writing and STM -- action to cancel the waiting.+--+-- __POSIX only.__ See 'waitWriteSocketSTM'. waitAndCancelWriteSocketSTM :: Socket -> IO (STM (), IO ())+#if defined(mingw32_HOST_OS)+waitAndCancelWriteSocketSTM _ =+ ioError $+ userError $+ "waitAndCancelWriteSocketSTM: Windows completion ports do not "+ ++ "provide readiness notification, and none is needed for "+ ++ "sending: issue the send instead"+#else waitAndCancelWriteSocketSTM s = withFdSocket s $ threadWaitWriteSTM . Fd+#endif
Network/Socket/Shutdown.hs view
@@ -9,21 +9,17 @@ , gracefulClose ) where -import Control.Concurrent (yield)+import Control.Concurrent (rtsSupportsBoundThreads, yield)+import Control.Concurrent.STM import qualified Control.Exception as E import Foreign.Marshal.Alloc (mallocBytes, free) import System.Timeout -#if !defined(mingw32_HOST_OS)-import Control.Concurrent.STM-import qualified GHC.Event as Ev-#endif- import Network.Socket.Buffer import Network.Socket.Imports import Network.Socket.Internal-import Network.Socket.STM import Network.Socket.Types+import Network.Socket.Wait data ShutdownCmd = ShutdownReceive | ShutdownSend@@ -69,52 +65,40 @@ -- Waiting TCP FIN. E.bracket (mallocBytes bufSize) free (recvEOF s tmout0) +-- Waiting for the peer's FIN, draining what arrives before it. The+-- receive is given up on rather than interrupted: an asynchronous+-- exception does not reach a thread blocked in one on Windows. recvEOF :: Socket -> Int -> Ptr Word8 -> IO ()-#if !defined(mingw32_HOST_OS)-recvEOF s tmout0 buf = do- mevmgr <- Ev.getSystemEventManager- case mevmgr of- Nothing -> recvEOFtimeout s tmout0 buf- Just _ -> recvEOFevent s tmout0 buf-#else-recvEOF = recvEOFtimeout-#endif+recvEOF s tmout0 buf+ | not rtsSupportsBoundThreads = recvEOFtimeout s tmout0 buf+ | otherwise = do+ -- millisecond to microsecond+ late <- registerDelay $ tmout0 * 1000+ loop late 0+ where+ loop late n0 = do+ r <- E.try $ recvBufWith s buf bufSize $ check =<< readTVar late+ case r of+ Left (_ :: E.IOException) -> return ()+ -- The deadline.+ Right (Left ()) -> return ()+ Right (Right n1) -> when (n1 > 0) $ do+ let n = n0 + n1+ when (n < drainLimit) $ loop late n +-- registerDelay needs -threaded, and so does the give-up on Windows --+-- where this cannot cut a receive short either, but nothing else works+-- there without it.+recvEOFtimeout :: Socket -> Int -> Ptr Word8 -> IO ()+-- millisecond to microsecond+recvEOFtimeout s tmout0 buf = void $ timeout (tmout0 * 1000) $ recvBuf s buf bufSize+ -- Don't use 4092 here. The GHC runtime takes the global lock -- if the length is over 3276 bytes in 32bit or 3272 bytes in 64bit. bufSize :: Int bufSize = 1024 -recvEOFtimeout :: Socket -> Int -> Ptr Word8 -> IO ()-recvEOFtimeout s tmout0 buf = void $ timeout tmout0 $ recvBuf s buf bufSize--#if !defined(mingw32_HOST_OS)-data Wait = MoreData | TimeoutTripped--recvEOFevent :: Socket -> Int -> Ptr Word8 -> IO ()-recvEOFevent s tmout0 buf = do- tmmgr <- Ev.getSystemTimerManager- tvar <- newTVarIO False- E.bracket (setupTimeout tmmgr tvar) (cancelTimeout tmmgr) $ \_ -> do- E.bracket (setupRead s) cancelRead $ \(rxWait,_) -> do- let toWait = readTVar tvar >>= check- wait = atomically ((toWait >> return TimeoutTripped)- <|> (rxWait >> return MoreData))- waitRes <- wait- case waitRes of- TimeoutTripped -> return ()- -- We don't check the (positive) length.- -- In normal case, it's 0. That is, only FIN is received.- -- In error cases, data is available. But there is no- -- application which can read it. So, let's stop receiving- -- to prevent attacks.- MoreData -> void $ recvBufNoWait s buf bufSize- where- -- millisecond to microsecond- tmout = tmout0 * 1000- setupTimeout tmmgr tvar =- Ev.registerTimeout tmmgr tmout $ atomically $ writeTVar tvar True- cancelTimeout = Ev.unregisterTimeout- setupRead = waitAndCancelReadSocketSTM- cancelRead (_,cancel) = cancel-#endif+-- Data left unread makes close send RST rather than FIN, so what has+-- arrived is drained -- but only this far: nothing is going to read it.+drainLimit :: Int+drainLimit = 128 * 1024
Network/Socket/SockAddr.hs view
@@ -6,12 +6,14 @@ connect, bind, accept,+ acceptWith, sendBufTo, recvBufFrom, sendBufMsg, recvBufMsg, ) where +import Control.Concurrent.STM (STM) import Control.Exception (IOException, throwIO, try) import System.Directory (removeFile) import System.IO.Error (isAlreadyInUseError, isDoesNotExistError)@@ -21,6 +23,7 @@ import Network.Socket.Imports import qualified Network.Socket.Name as G import qualified Network.Socket.Syscall as G+import qualified Network.Socket.Wait as G #if !defined(mingw32_HOST_OS) import Network.Socket.Posix.Cmsg #else@@ -74,6 +77,14 @@ -- On Unix, FD_CLOEXEC is set to the new 'Socket'. accept :: Socket -> IO (Socket, SockAddr) accept = G.accept++-- | 'accept' which the caller can give up on. Whichever settles+-- first decides: 'Left' when the 'STM' action fires, 'Right' when a+-- connection arrives.+--+-- @since 3.2.10.0+acceptWith :: Socket -> STM a -> IO (Either a (Socket, SockAddr))+acceptWith = G.acceptWith -- | Send data to the socket. The recipient can be specified -- explicitly, so the socket need not be in a connected state.
Network/Socket/Syscall.hs view
@@ -13,7 +13,9 @@ #if defined(mingw32_HOST_OS) import Control.Exception (bracket) import Foreign (FunPtr)+import Foreign.Marshal.Alloc (alloca) import GHC.Conc (asyncDoProc)+import Network.Socket.Cbits #else import Foreign.C.Error (getErrno, eINTR, eINPROGRESS) import GHC.Conc (threadWaitWrite)@@ -84,6 +86,7 @@ -- So, we don't have to call "close" which uses "closeFdWith". unsetIPv6Only s setDontFragment s+ unsetConnReset s return s where create = do@@ -129,7 +132,28 @@ return () #endif + unsetConnReset s = when (stype == Datagram) $ reportConnReset s False +-- Whether the socket reports the ICMP unreachable an earlier send of its+-- own caused. Winsock reports it to the next receive even on a socket+-- which was never connected, where POSIX says nothing of it at all: one+-- reply bouncing off a client which has gone ends a server's receive+-- loop. 'socket' therefore turns it off and 'connect' turns it back on,+-- which is the ECONNREFUSED POSIX gives a connected datagram socket.+--+-- It is advice for datagrams alone and does nothing to any other socket,+-- so the result is not worth looking at.+reportConnReset :: Socket -> Bool -> IO ()+#if defined(mingw32_HOST_OS)+reportConnReset s report =+ with (if report then 1 else 0 :: Word32) $ \val ->+ alloca $ \ret ->+ void $ withFdSocket s $ \fd ->+ c_WSAIoctl fd sioUDPConnReset val 4 nullPtr 0 ret nullPtr nullPtr+#else+reportConnReset _ _ = return ()+#endif+ ----------------------------------------------------------------------------- -- Binding a socket @@ -148,8 +172,9 @@ -- | Connect to a remote socket at address. connect :: SocketAddress sa => Socket -> sa -> IO ()-connect s sa = withSocketsDo $ withSocketAddress sa $ \p_sa sz ->+connect s sa = withSocketsDo $ withSocketAddress sa $ \p_sa sz -> do connectLoop s p_sa (fromIntegral sz)+ reportConnReset s True connectLoop :: SocketAddress sa => Socket -> Ptr sa -> CInt -> IO () connectLoop s p_sa sz = withFdSocket s $ \fd -> loop fd@@ -251,6 +276,11 @@ #endif #if defined(mingw32_HOST_OS)+-- int WSAIoctl(SOCKET, DWORD, LPVOID, DWORD, LPVOID, DWORD, LPDWORD,+-- LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE)+foreign import CALLCONV unsafe "WSAIoctl"+ c_WSAIoctl :: CInt -> Word32 -> Ptr Word32 -> Word32 -> Ptr () -> Word32+ -> Ptr Word32 -> Ptr () -> Ptr () -> IO CInt foreign import CALLCONV safe "accept" c_accept_safe :: CInt -> Ptr sa -> Ptr CInt{-CSockLen???-} -> IO CInt foreign import ccall unsafe "rtsSupportsBoundThreads"
Network/Socket/Types.hsc view
@@ -82,6 +82,9 @@ , htonl , ntohl , In6Addr(..)++ -- * Multicast Group+ , MulticastGroup(..) ) where import Data.IORef (IORef, newIORef, readIORef, atomicModifyIORef', mkWeakIORef)@@ -1504,3 +1507,27 @@ -- | Zero a structure. zeroMemory :: Ptr a -> CSize -> IO () zeroMemory dest nbytes = memset dest 0 (fromIntegral nbytes)+++------------------------------------------------------------------------+-- Multicast Group++data MulticastGroup = MulticastGroup+ { groupAddress :: HostAddress+ , localAddress :: Maybe HostAddress+ } deriving (Show, Eq)++instance Storable MulticastGroup where+ sizeOf ~_ = #size struct ip_mreq+ alignment ~_ = #alignment struct ip_mreq+ peek p = do+ g <- (#peek struct ip_mreq, imr_multiaddr) p+ l <- (#peek struct ip_mreq, imr_interface) p+ pure . MulticastGroup g $ case l of+ 0 -> Nothing+ loc -> Just loc+ poke p (MulticastGroup g l) = do+ (#poke struct ip_mreq, imr_multiaddr) p g+ (#poke struct ip_mreq, imr_interface) p (case l of+ Nothing -> 0+ Just loc -> loc)
+ Network/Socket/Wait.hs view
@@ -0,0 +1,227 @@+{-# LANGUAGE CPP #-}++#include "HsNetDef.h"++-- | Blocking socket operations which a caller can give up on.+--+-- Each takes an 'STM' action beside the operation. Whichever+-- settles first decides the result: 'Left' when the caller gave up,+-- 'Right' when the operation completed. Nothing has to be closed or+-- interrupted to make the thread return, so neither the delivery of+-- @evtClose@ by @closeFdWith@ nor an asynchronous exception reaching+-- a blocking call is relied upon.+--+-- __On Windows these need the threaded runtime.__ There is no+-- readiness to wait for there, so the operation is started and then+-- cancelled, and the thread it runs in blocks in a foreign call.+-- Without @-threaded@ that blocks every other thread too, including+-- the one which would have given up, and nothing returns at all.+module Network.Socket.Wait (+ withReadable,+ acceptWith,+ recvBufWith,+ recvBufFromWith,+ isClosedSocketError,+ isTransientAcceptError,+) where++import Control.Concurrent.STM+import qualified Control.Exception as E+import Foreign.C.Error (+ Errno (..),+ eCONNABORTED,+ eHOSTDOWN,+ eHOSTUNREACH,+ eNETDOWN,+ eNETUNREACH,+ eNONET,+ eNOPROTOOPT,+ ePROTO,+ )+import GHC.IO.Exception (IOErrorType (..), ioe_errno)+import System.IO.Error (ioeGetErrorType)++import Network.Socket.Buffer+#if defined(mingw32_HOST_OS)+import Network.Socket.Cbits+import Network.Socket.Win32.Cancel+#else+import Network.Socket.STM+#endif+import Network.Socket.Imports+import Network.Socket.Syscall+import Network.Socket.Types++-- | Running an action once the socket is readable, unless the 'STM'+-- action fires first. The 'STM' action is also looked at before+-- anything else, so a caller which has already given up never waits.+-- An operation which has completed wins a tie, so nothing it has+-- already received is thrown away.+--+-- __The action must be an operation on this socket which returns+-- without blocking once the socket is readable.__ The type does not+-- say so and nothing checks it. On POSIX the action runs on the+-- calling thread after readiness and nothing interrupts it there: the+-- give-up ends the wait, not the action. On Windows there is no+-- readiness to wait for, so the action is started at once on a thread+-- of its own and the give-up cancels it with @CancelIoEx@ on this+-- socket, which reaches nothing else -- an action blocked on anything+-- else would never end.+--+-- __One reader at a time__ is what keeps that condition. A second+-- thread taking the data between the readiness and the action leaves+-- the action blocking on the socket, with the give-up no longer in+-- play.+--+-- __The 'STM' action is run more than once__, so it has to be a test+-- and not something which takes what it reads: it is looked at before+-- the wait and again as part of it, and 'Network.Socket.ByteString.recvWith'+-- looks at it once more before a read which would not block. Reading+-- a 'TVar' is what it is for.+withReadable :: Socket -> STM a -> IO b -> IO (Either a b)+withReadable s giveUp act = do+ -- Looking at the give-up first: on Windows 'wait' starts the+ -- operation before it looks at any STM, and on POSIX this keeps a+ -- caller which has given up off a descriptor close may have freed.+ gaveUp <- atomically $ (Just <$> giveUp) `orElse` return Nothing+ case gaveUp of+ Just a -> return $ Left a+ Nothing -> wait+ where+#if !defined(mingw32_HOST_OS)+ wait = do+ (readable, cancelWait) <- waitAndCancelReadSocketSTM s+ ev <-+ atomically ((Left <$> giveUp) `orElse` (Right <$> readable))+ `E.finally` (cancelWait `E.catch` gone)+ either (return . Left) (const $ Right <$> act) ev++ -- The cancel can throw, and from a finally that would replace the+ -- exception which ended the wait -- the timeout the caller is waiting+ -- to see, say. What it reports is a registration which has already+ -- gone, and there is nothing to do about that.+ gone :: E.IOException -> IO ()+ gone _ = return ()+#else+ wait = do+ (completed, cancelAct) <- windowsViaSTM s act+ -- The operation wins a tie. It has already read into the+ -- caller's buffer by then, and answering Left would throw those+ -- bytes away -- which for a stream loses them for good.+ --+ -- onException because the call runs in a thread of its own here:+ -- an asynchronous exception arriving during the wait would+ -- otherwise leave it blocked in a foreign call, holding the+ -- socket and writing into a buffer the caller has let go of.+ ev <-+ atomically ((Right <$> completed) `orElse` (Left <$> giveUp))+ `E.onException` cancelAct+ case ev of+ Right b -> return $ Right b+ Left a -> do+ cancelAct+ return $ Left a+#endif++-- | 'accept' which the caller can give up on.+--+-- @since 3.2.10.0+acceptWith :: SocketAddress sa => Socket -> STM a -> IO (Either a (Socket, sa))+acceptWith s giveUp = withReadable s giveUp $ accept s++-- | 'recvBuf' which the caller can give up on.+--+-- @since 3.2.10.0+recvBufWith :: Socket -> Ptr Word8 -> Int -> STM a -> IO (Either a Int)+recvBufWith s ptr nbytes giveUp = withReadable s giveUp $ recvBuf s ptr nbytes++-- | 'recvBufFrom' which the caller can give up on.+--+-- @since 3.2.10.0+recvBufFromWith+ :: SocketAddress sa+ => Socket -> Ptr Word8 -> Int -> STM a -> IO (Either a (Int, sa))+recvBufFromWith s ptr nbytes giveUp =+ withReadable s giveUp $ recvBufFrom s ptr nbytes++-- | Whether this is the error a socket operation gives once the socket has+-- been closed under it.+--+-- A caller which stops when it is told also stops when the socket it was+-- waiting on goes away, and this is how that arrives. It is not an+-- error to report: closing the socket is how a server was stopped+-- before there was anything to tell it, and callers which do that are+-- still out there.+--+-- @since 3.2.10.0+isClosedSocketError :: E.IOException -> Bool+isClosedSocketError e = ioeGetErrorType e == InvalidArgument || isWinsock e+ where+#if defined(mingw32_HOST_OS)+ -- closesocket gives WSAEINTR to a call already blocked on the socket+ -- and WSAENOTSOCK to one which starts afterwards.+ isWinsock x = ioe_errno x `elem` map Just [wsaEINTR, wsaENOTSOCK]+#else+ isWinsock _ = False+#endif++-- | Whether an exception from 'accept' is about the connection it was+-- accepting rather than about the listening socket.+--+-- The peer may reset the connection before it is accepted+-- (@ECONNABORTED@), and Linux reports a new socket's already-pending+-- network errors through @accept()@ as well; accept(2) asks for all of+-- these to be retried, like @EAGAIN@. The connection has left the queue+-- by then, so a retry blocks for a new one rather than spinning on the+-- same failure.+--+-- Two which are not here:+--+-- * Running out of descriptors (@EMFILE@, @ENFILE@) is about the process,+-- not about one connection, and retrying at once spins: the listening+-- socket stays readable. 'System.IO.Error.isFullError' names it, and a+-- caller which retries it should wait first.+--+-- * @EOPNOTSUPP@ is on accept(2)'s list and is left off this one on+-- purpose: it is also what a listening socket which is not+-- 'Network.Socket.Stream' answers, which is permanent, and a retry+-- would spin on it forever.+--+-- Winsock numbers its errors apart from @errno@, so on Windows a list+-- of its own is read as well. @WSAEINTR@ is not on it: there it is+-- what @closesocket@ gives a blocked call, which 'isClosedSocketError'+-- takes. @WSAENOBUFS@ is left off for the reason @EMFILE@ is.+--+-- @since 3.2.10.0+isTransientAcceptError :: E.IOException -> Bool+isTransientAcceptError e =+ ioeGetErrorType e == Interrupted || any is errnos || isWinsock e+ where+ -- An errno the platform does not have is Errno (-1), which would+ -- otherwise match every error carrying that.+ is (Errno n) = n /= -1 && ioe_errno e == Just n+ errnos =+ [ eCONNABORTED+ , eHOSTDOWN+ , eHOSTUNREACH+ , eNETDOWN+ , eNETUNREACH+ , eNONET+ , eNOPROTOOPT+ , ePROTO+ ]+#if defined(mingw32_HOST_OS)+ isWinsock x = ioe_errno x `elem` map Just codes+ codes =+ [ wsaECONNABORTED+ , wsaECONNRESET+ , wsaEHOSTDOWN+ , wsaEHOSTUNREACH+ , wsaENETDOWN+ , wsaENETRESET+ , wsaENETUNREACH+ , wsaENOPROTOOPT+ ]+#else+ isWinsock _ = False+#endif
+ Network/Socket/Win32/Cancel.hs view
@@ -0,0 +1,109 @@+{-# LANGUAGE CPP #-}+{-# LANGUAGE LambdaCase #-}++#include "HsNetDef.h"++-- | Giving up on an operation on a socket, on Windows.+--+-- There is no readiness to wait for here -- completion ports report+-- that an operation has finished, not that one could be started -- so+-- the operation is run on a thread of its own and ended with+-- @CancelIoEx@. Nothing else would end it: an asynchronous exception+-- does not reach a thread blocked in a socket call on Windows.+--+-- __These need the threaded runtime.__ The operation blocks in a+-- foreign call, which without @-threaded@ stops every other thread,+-- including the one which would cancel it.+module Network.Socket.Win32.Cancel (+ windowsViaSTM,+ windowsCancelPendingIo,+) where++import Control.Concurrent (forkIO)+import Control.Concurrent.STM+import qualified Control.Exception as E+import Foreign.Ptr (nullPtr)+import System.IO (hPutStrLn, stderr)++import Network.Socket.Imports+import Network.Socket.Types++-- | Running a blocking operation on the socket in a thread of its own+-- and handing its result over through STM, together with an action+-- cancelling it. If the operation fails, the 'STM' action rethrows+-- the exception.+--+-- Cancelling waits for the operation to end, so a buffer it reads+-- into has to stay alive until either the 'STM' action completes or+-- the cancel returns.+windowsViaSTM :: Socket -> IO a -> IO (STM a, IO ())+windowsViaSTM s act = do+ var <- newTVarIO Nothing+ -- Masked so that the var is written whatever happens: a thread+ -- which died between the call returning and the write would leave+ -- the waiter retrying and the cancel below looping for ever. The+ -- call itself is a foreign one, which no exception reaches anyway.+ tid <- forkIO $ E.mask_ $ E.try act >>= atomically . writeTVar var . Just+ let wait =+ readTVar var >>= \case+ Nothing -> retry+ Just (Left e) -> throwSTM (e :: E.SomeException)+ Just (Right x) -> return x+ ended = isJust <$> readTVar var+ return (wait, cancel s ended tid)+ where+ -- An asynchronous exception does not reach a thread blocked in a+ -- socket call here, so the call itself is cancelled. CancelIoEx+ -- reaches an operation which is already in the kernel, and a call+ -- which has not got there yet is caught by trying again. The+ -- socket is never shut down to end the call: the caller is entitled+ -- to keep using it, and a shutdown would take that away.+ --+ -- Uninterruptible because this must not be abandoned: the operation+ -- is still writing into the caller's buffer until it ends, and+ -- nothing but the end of it stops the loop.+ cancel sock ended _tid = E.uninterruptibleMask_ $ loop sayAfter+ where+ loop n = do+ windowsCancelPendingIo sock+ over <- endedWithin 1000+ unless over $ do+ when (n == 1) say+ loop (n - 1)+ -- Wait for the call to end rather than sleep through it:+ -- CancelIoEx usually works at once, and a sleep here costs a+ -- whole timer tick, which Windows measures in tens of ms.+ endedWithin us = do+ late <- registerDelay us+ atomically $+ (True <$ (check =<< ended))+ `orElse` (False <$ (check =<< readTVar late))+ -- Rounds before saying something and carrying on. A round which+ -- cancels nothing costs a timer tick, which Windows measures in tens+ -- of milliseconds, so this is seconds rather than the hundredth of a+ -- second it reads as. Two rounds is the most ever measured.+ sayAfter :: Int+ sayAfter = 100+ -- Said from a thread of its own, and its failure ignored. This is+ -- the path which has to finish before the caller's buffer can go,+ -- and writing to stderr can block on the handle's lock or on a pipe+ -- nobody is draining -- for ever, inside the mask above.+ say = void $ forkIO $ void (E.try warn :: IO (Either E.SomeException ()))+ warn =+ hPutStrLn stderr $+ "network: a socket operation given up on is not cancelling; "+ ++ "still trying. Please report this."++-- | Cancelling whatever operation is pending on the socket, while+-- leaving the socket itself usable: unlike 'Network.Socket.shutdown'+-- this does not shut it down. An operation which has not reached the+-- kernel yet is not cancelled, so the caller has to be ready to try+-- again.+windowsCancelPendingIo :: Socket -> IO ()+windowsCancelPendingIo s = void $ withFdSocket s $ \fd -> c_CancelIoEx fd nullPtr++-- BOOL CancelIoEx(HANDLE hFile, LPOVERLAPPED lpOverlapped)+-- A SOCKET is a kernel HANDLE. A NULL lpOverlapped cancels all+-- pending I/O on the handle, whichever thread issued it.+foreign import CALLCONV unsafe "CancelIoEx"+ c_CancelIoEx :: CInt -> Ptr () -> IO CInt
+ Network/Socket/Win32/HostName.hsc view
@@ -0,0 +1,39 @@+{-# LANGUAGE CPP #-}++#include "HsNet.h"+##include "HsNetDef.h"++module Network.Socket.Win32.HostName (+ getHostName,+)+where++import Foreign.C.Types+import Foreign.Marshal.Utils+import Foreign.Ptr+import Foreign.Storable+import Network.Socket.Info (HostName)+import System.Win32.Types++foreign import CALLCONV unsafe "windows.h GetComputerNameExW"+ getComputerNameEx :: COMPUTER_NAME_FORMAT -> LPTSTR -> LPDWORD -> IO BOOL++type COMPUTER_NAME_FORMAT = CInt++computerNamePhysicalDnsHostname :: COMPUTER_NAME_FORMAT+computerNamePhysicalDnsHostname = 5++-- | Get name of current host+--+-- Since: 3.3.0.0+getHostName :: IO HostName+getHostName = with 0 $ \p_charcount -> do+ -- On the first run, determine the character count and ignore any error we get+ _ <- getComputerNameEx computerNamePhysicalDnsHostname nullPtr p_charcount+ charcount <- peek p_charcount++ -- The second time around, use the correct character count to retrieve the data+ withTString (replicate (fromIntegral charcount) ' ') $ \name -> do+ failIfFalse_ "GetComputerNameExW" $+ getComputerNameEx computerNamePhysicalDnsHostname name p_charcount+ peekTString name
configure view
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i < ia->datasize; ++i)- ia->data[i] = i * 1.234;- // Work around memory leak warnings.- free (ia);-- // Check named initializers.- struct named_init ni = {- .number = 34,- .name = L"Test wide string",- .average = 543.34343,- };-- ni.number = 58;-- int dynamic_array[ni.number];- dynamic_array[0] = argv[0][0];- dynamic_array[ni.number - 1] = 543;-- // work around unused variable warnings- ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\''- || dynamic_array[ni.number - 1] != 543);-'--# Test code for whether the C compiler supports C11 (global declarations)-ac_c_conftest_c11_globals='-/* Does the compiler advertise C11 conformance? */-#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L-# error "Compiler does not advertise C11 conformance"-#endif--// Check _Alignas.-char _Alignas (double) aligned_as_double;-char _Alignas (0) no_special_alignment;-extern char aligned_as_int;-char _Alignas (0) _Alignas (int) aligned_as_int;--// Check _Alignof.-enum-{- int_alignment = _Alignof (int),- int_array_alignment = _Alignof (int[100]),- char_alignment = _Alignof (char)-};-_Static_assert (0 < -_Alignof (int), "_Alignof is signed");--// Check _Noreturn.-int _Noreturn does_not_return (void) { for (;;) continue; 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then--printf "%s\n" "#define const /**/" >>confdefs.h--fi---ac_header= ac_cache=-for ac_item in $ac_header_c_list-do- if test $ac_cache; then- ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"- if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then- printf "%s\n" "#define $ac_item 1" >> confdefs.h- fi- ac_header= ac_cache=- elif test $ac_header; then- ac_cache=$ac_item- else- ac_header=$ac_item- fi-done---------if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes-then :--printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "limits.h" "ac_cv_header_limits_h" "$ac_includes_default"-if test "x$ac_cv_header_limits_h" = xyes-then :- printf "%s\n" "#define HAVE_LIMITS_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "stdlib.h" "ac_cv_header_stdlib_h" "$ac_includes_default"-if test "x$ac_cv_header_stdlib_h" = xyes-then :- printf "%s\n" "#define HAVE_STDLIB_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "unistd.h" "ac_cv_header_unistd_h" "$ac_includes_default"-if test "x$ac_cv_header_unistd_h" = xyes-then :- printf "%s\n" "#define HAVE_UNISTD_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "sys/types.h" "ac_cv_header_sys_types_h" "$ac_includes_default"-if test "x$ac_cv_header_sys_types_h" = xyes-then :- printf "%s\n" "#define HAVE_SYS_TYPES_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "fcntl.h" "ac_cv_header_fcntl_h" "$ac_includes_default"-if test "x$ac_cv_header_fcntl_h" = xyes-then :- printf "%s\n" "#define HAVE_FCNTL_H 1" >>confdefs.h--fi--ac_fn_c_check_header_compile "$LINENO" "sys/uio.h" "ac_cv_header_sys_uio_h" "$ac_includes_default"-if test "x$ac_cv_header_sys_uio_h" = xyes-then :- printf "%s\n" "#define HAVE_SYS_UIO_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "sys/socket.h" "ac_cv_header_sys_socket_h" "$ac_includes_default"-if test "x$ac_cv_header_sys_socket_h" = xyes-then :- printf "%s\n" "#define HAVE_SYS_SOCKET_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "netinet/in.h" "ac_cv_header_netinet_in_h" "$ac_includes_default"-if test "x$ac_cv_header_netinet_in_h" = xyes-then :- printf "%s\n" "#define HAVE_NETINET_IN_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "netinet/tcp.h" "ac_cv_header_netinet_tcp_h" "$ac_includes_default"-if test "x$ac_cv_header_netinet_tcp_h" = xyes-then :- printf "%s\n" "#define HAVE_NETINET_TCP_H 1" >>confdefs.h--fi--ac_fn_c_check_header_compile "$LINENO" "sys/un.h" "ac_cv_header_sys_un_h" "$ac_includes_default"-if test "x$ac_cv_header_sys_un_h" = xyes-then :- printf "%s\n" "#define HAVE_SYS_UN_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "arpa/inet.h" "ac_cv_header_arpa_inet_h" "$ac_includes_default"-if test "x$ac_cv_header_arpa_inet_h" = xyes-then :- printf "%s\n" "#define HAVE_ARPA_INET_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "netdb.h" "ac_cv_header_netdb_h" "$ac_includes_default"-if test "x$ac_cv_header_netdb_h" = xyes-then :- printf "%s\n" "#define HAVE_NETDB_H 1" >>confdefs.h--fi--ac_fn_c_check_header_compile "$LINENO" "net/if.h" "ac_cv_header_net_if_h" "$ac_includes_default"-if test "x$ac_cv_header_net_if_h" = xyes-then :- printf "%s\n" "#define HAVE_NET_IF_H 1" >>confdefs.h--fi-ac_fn_c_check_header_compile "$LINENO" "netioapi.h" "ac_cv_header_netioapi_h" "$ac_includes_default"-if test "x$ac_cv_header_netioapi_h" = xyes-then :- printf "%s\n" "#define HAVE_NETIOAPI_H 1" >>confdefs.h--fi---ac_fn_c_check_type "$LINENO" "struct ucred" "ac_cv_type_struct_ucred" "$ac_includes_default"-if test "x$ac_cv_type_struct_ucred" = xyes-then :--printf "%s\n" "#define HAVE_STRUCT_UCRED 1" >>confdefs.h---fi---ac_fn_c_check_func "$LINENO" "gai_strerror" "ac_cv_func_gai_strerror"-if test "x$ac_cv_func_gai_strerror" = xyes-then :- printf "%s\n" "#define HAVE_GAI_STRERROR 1" >>confdefs.h--fi-ac_fn_c_check_func "$LINENO" "gethostent" "ac_cv_func_gethostent"-if test "x$ac_cv_func_gethostent" = xyes-then :- printf "%s\n" "#define HAVE_GETHOSTENT 1" >>confdefs.h--fi-ac_fn_c_check_func "$LINENO" "accept4" "ac_cv_func_accept4"-if test "x$ac_cv_func_accept4" = xyes-then :- printf "%s\n" "#define HAVE_ACCEPT4 1" >>confdefs.h--fi--ac_fn_c_check_func "$LINENO" "getpeereid" "ac_cv_func_getpeereid"-if test "x$ac_cv_func_getpeereid" = xyes-then :- printf "%s\n" "#define HAVE_GETPEEREID 1" >>confdefs.h--fi---{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC options needed to detect all undeclared functions" >&5-printf %s "checking for $CC options needed to detect all undeclared functions... " >&6; }-if test ${ac_cv_c_undeclared_builtin_options+y}-then :- printf %s "(cached) " >&6-else case e in #(- e) ac_save_CFLAGS=$CFLAGS- ac_cv_c_undeclared_builtin_options='cannot detect'- for ac_arg in '' -fno-builtin; do- CFLAGS="$ac_save_CFLAGS $ac_arg"- # This test program should *not* compile successfully.- cat confdefs.h - <<_ACEOF >conftest.$ac_ext-/* end confdefs.h. */--int-main (void)-{-(void) strchr;- ;- return 0;-}-_ACEOF-if ac_fn_c_try_compile "$LINENO"-then :--else case e in #(- e) # This test program should compile successfully.- # No library function is consistently available on- # freestanding implementations, so test against a dummy- # declaration. Include always-available headers on the- # off chance that they somehow elicit warnings.- cat confdefs.h - <<_ACEOF >conftest.$ac_ext-/* end confdefs.h. */-#include <float.h>-#include <limits.h>-#include <stdarg.h>-#include <stddef.h>-extern void ac_decl (int, char *);--int-main (void)-{-(void) ac_decl (0, (char *) 0);- (void) ac_decl;-- ;- return 0;-}-_ACEOF-if ac_fn_c_try_compile "$LINENO"-then :- if test x"$ac_arg" = x-then :- ac_cv_c_undeclared_builtin_options='none needed'-else case e in #(- e) ac_cv_c_undeclared_builtin_options=$ac_arg ;;-esac-fi- break-fi-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;-esac-fi-rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext- done- CFLAGS=$ac_save_CFLAGS- ;;-esac-fi-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_undeclared_builtin_options" >&5-printf "%s\n" "$ac_cv_c_undeclared_builtin_options" >&6; }- case $ac_cv_c_undeclared_builtin_options in #(- 'cannot detect') :- { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5-printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}-as_fn_error $? "cannot make $CC report undeclared builtins-See 'config.log' for more details" "$LINENO" 5; } ;; #(- 'none needed') :- ac_c_undeclared_builtin_options='' ;; #(- *) :- ac_c_undeclared_builtin_options=$ac_cv_c_undeclared_builtin_options ;;-esac--ac_fn_check_decl "$LINENO" "AI_ADDRCONFIG" "ac_cv_have_decl_AI_ADDRCONFIG" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"-if test "x$ac_cv_have_decl_AI_ADDRCONFIG" = xyes-then :- ac_have_decl=1-else case e in #(- e) ac_have_decl=0 ;;-esac-fi-printf "%s\n" "#define HAVE_DECL_AI_ADDRCONFIG $ac_have_decl" >>confdefs.h-ac_fn_check_decl "$LINENO" "AI_ALL" "ac_cv_have_decl_AI_ALL" "$ac_includes_default" "$ac_c_undeclared_builtin_options" "CFLAGS"-if test "x$ac_cv_have_decl_AI_ALL" = xyes-then :- ac_have_decl=1-else case e in #(- e) ac_have_decl=0 ;;-esac-fi-printf "%s\n" "#define HAVE_DECL_AI_ALL $ac_have_decl" >>confdefs.h-ac_fn_check_decl "$LINENO" "AI_NUMERICSERV" "ac_cv_have_decl_AI_NUMERICSERV" "$ac_includes_default" 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" >&6; }+if eval test \${$3+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) eval "$3=no"+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+int+main (void)+{+if (sizeof ($2))+ return 0;+ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$4+int+main (void)+{+if (sizeof (($2)))+ return 0;+ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :++else case e in #(+ e) eval "$3=yes" ;;+esac+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;+esac+fi+eval ac_res=\$$3+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5+printf '%s\n' "$ac_res" >&6; }+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno++} # ac_fn_c_check_type++# ac_fn_c_try_link LINENO+# -----------------------+# Try to link conftest.$ac_ext, and return whether this succeeded.+ac_fn_c_try_link ()+{+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack+ rm -f conftest.$ac_objext conftest.beam conftest$ac_exeext+ if { { ac_try="$ac_link"+case "(($ac_try" in+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+ *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf '%s\n' "$ac_try_echo"; } >&5+ (eval "$ac_link") 2>conftest.err+ ac_status=$?+ if test -s conftest.err; then+ grep -v '^ *+' conftest.err >conftest.er1+ cat conftest.er1 >&5+ mv -f conftest.er1 conftest.err+ fi+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+ test $ac_status = 0; } && {+ test -z "$ac_c_werror_flag" ||+ test ! -s conftest.err+ } && test -s conftest$ac_exeext && {+ test "$cross_compiling" = yes ||+ test -x conftest$ac_exeext+ }+then :+ ac_retval=0+else case e in #(+ e) printf '%s\n' "$as_me: failed program was:" >&5+sed 's/^/| /' conftest.$ac_ext >&5++ ac_retval=1 ;;+esac+fi+ # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information+ # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would+ # interfere with the next link command; also delete a directory that is+ # left behind by Apple's compiler. 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Invocation command line was++ $ $0$ac_configure_args_raw++_ACEOF+exec 5>>config.log+{+cat <<_ASUNAME+## --------- ##+## Platform. ##+## --------- ##++hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`+uname -m = `(uname -m) 2>/dev/null || echo unknown`+uname -r = `(uname -r) 2>/dev/null || echo unknown`+uname -s = `(uname -s) 2>/dev/null || echo unknown`+uname -v = `(uname -v) 2>/dev/null || echo unknown`++/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`+/bin/uname -X = `(/bin/uname -X) 2>/dev/null || echo unknown`++/bin/arch = `(/bin/arch) 2>/dev/null || echo unknown`+/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null || echo unknown`+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`+/usr/bin/hostinfo = `(/usr/bin/hostinfo) 2>/dev/null || echo unknown`+/bin/machine = `(/bin/machine) 2>/dev/null || echo unknown`+/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null || echo unknown`+/bin/universe = `(/bin/universe) 2>/dev/null || echo unknown`++_ASUNAME++as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ printf '%s\n' "PATH: $as_dir"+ done+IFS=$as_save_IFS++} >&5++cat >&5 <<_ACEOF+++## ----------- ##+## Core tests. ##+## ----------- ##++_ACEOF+++# Keep a trace of the command line.+# Strip out --no-create and --no-recursion so they do not pile up.+# Strip out --silent because we don't want to record it for future runs.+# Also quote any args containing shell meta-characters.+# Make two passes to allow for proper duplicate-argument suppression.+ac_configure_args=+ac_configure_args0=+ac_configure_args1=+ac_must_keep_next=false+for ac_pass in 1 2+do+ for ac_arg+ do+ case $ac_arg in+ -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \+ | -silent | --silent | --silen | --sile | --sil)+ continue ;;+ *\'*)+ ac_arg=`printf '%s\n' "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;+ esac+ case $ac_pass in+ 1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;+ 2)+ as_fn_append ac_configure_args1 " '$ac_arg'"+ if test $ac_must_keep_next = true; then+ ac_must_keep_next=false # Got value, back to normal.+ else+ case $ac_arg in+ *=* | --config-cache | -C | -disable-* | --disable-* \+ | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \+ | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \+ | -with-* | --with-* | -without-* | --without-* | --x)+ case "$ac_configure_args0 " in+ "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;+ esac+ ;;+ -* ) ac_must_keep_next=true ;;+ esac+ fi+ as_fn_append ac_configure_args " '$ac_arg'"+ ;;+ esac+ done+done+{ ac_configure_args0=; unset ac_configure_args0;}+{ ac_configure_args1=; unset ac_configure_args1;}++# Dump the cache to stdout. It can be in a pipe (this is a requirement).+ac_cache_dump ()+{+ # The following way of writing the cache mishandles newlines in values,+# but we know of no workaround that is simple, portable, and efficient.+# So, we kill variables containing newlines.+# Ultrix sh set writes to stderr and can't be redirected directly,+# and sets the high bit in the cache file unless we assign to the vars.+(+ for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do+ eval ac_val=\$$ac_var+ case $ac_val in #(+ *${as_nl}*)+ case $ac_var in #(+ *_cv_*) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5+printf '%s\n' "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;+ esac+ case $ac_var in #(+ _ | IFS | as_nl) ;; #(+ BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(+ *) { eval $ac_var=; unset $ac_var;} ;;+ esac ;;+ esac+ done++ (set) 2>&1 |+ case $as_nl`(ac_space=' '; set) 2>&1` in #(+ *${as_nl}ac_space=\ *)+ # 'set' does not quote correctly, so add quotes: double-quote+ # substitution turns \\\\ into \\, and sed turns \\ into \.+ sed -n \+ "s/'/'\\\\''/g;+ s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"+ ;; #(+ *)+ # 'set' quotes correctly as required by POSIX, so do not add quotes.+ sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"+ ;;+ esac |+ sort+)+}++# Print debugging info to stdout.+ac_dump_debugging_info ()+{+ echo++ printf '%s\n' "## ---------------- ##+## Cache variables. ##+## ---------------- ##"+ echo+ ac_cache_dump+ echo++ printf '%s\n' "## ----------------- ##+## Output variables. ##+## ----------------- ##"+ echo+ for ac_var in $ac_subst_vars+ do+ eval ac_val=\$$ac_var+ case $ac_val in+ *\'*) ac_val=`printf '%s\n' "$ac_val" | sed "s/'/'\\\\\\\\''/g"`;;+ esac+ printf '%s\n' "$ac_var='$ac_val'"+ done | sort+ echo++ if test -n "$ac_subst_files"; then+ printf '%s\n' "## ------------------- ##+## File substitutions. ##+## ------------------- ##"+ echo+ for ac_var in $ac_subst_files+ do+ eval ac_val=\$$ac_var+ case $ac_val in+ *\'*) ac_val=`printf '%s\n' "$ac_val" | sed "s/'/'\\\\\\\\''/g"`;;+ esac+ printf '%s\n' "$ac_var='$ac_val'"+ done | sort+ echo+ fi++ if test -s confdefs.h; then+ printf '%s\n' "## ----------- ##+## confdefs.h. ##+## ----------- ##"+ echo+ cat confdefs.h+ echo+ fi+ test "$ac_signal" != 0 &&+ printf '%s\n' "$as_me: caught signal $ac_signal"+ printf '%s\n' "$as_me: exit $exit_status"+}++# When interrupted or exit'd, cleanup temporary files, and complete+# config.log.+ac_exit_trap ()+{+ exit_status=+ # Sanitize IFS.+ IFS=" "" $as_nl"+ # Save into config.log some information that might help in debugging.+ ac_dump_debugging_info >&5+ eval "rm -f $ac_clean_CONFIG_STATUS core *.core core.conftest.*" &&+ rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&+ exit $exit_status+}++trap 'ac_exit_trap $?' 0+for ac_signal in 1 2 13 15; do+ trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal+done+ac_signal=0++# confdefs.h avoids OS command line length limits that DEFS can exceed.+rm -f -r conftest* confdefs.h++printf '%s\n' "/* confdefs.h */" > confdefs.h++# Predefined preprocessor variables.++printf '%s\n' "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h++printf '%s\n' "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h++printf '%s\n' "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h++printf '%s\n' "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h++printf '%s\n' "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h++printf '%s\n' "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h+++# Let the site file select an alternate cache file if it wants to.+# Prefer an explicitly selected file to automatically selected ones.+if test -n "$CONFIG_SITE"; then+ ac_site_files="$CONFIG_SITE"+elif test "x$prefix" != xNONE; then+ ac_site_files="$prefix/share/config.site $prefix/etc/config.site"+else+ ac_site_files="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"+fi++for ac_site_file in $ac_site_files+do+ case $ac_site_file in #(+ */*) :+ ;; #(+ *) :+ ac_site_file=./$ac_site_file ;;+esac+ if test -f "$ac_site_file" && test -r "$ac_site_file"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5+printf '%s\n' "$as_me: loading site script $ac_site_file" >&6;}+ sed 's/^/| /' "$ac_site_file" >&5+ . "$ac_site_file" \+ || { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}+as_fn_error $? "failed to load site script $ac_site_file+See 'config.log' for more details" "$LINENO" 5; }+ fi+done++if test -r "$cache_file"; then+ # Some versions of bash will fail to source /dev/null (special files+ # actually), so we avoid doing that. DJGPP emulates it as a regular file.+ if test /dev/null != "$cache_file" && test -f "$cache_file"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5+printf '%s\n' "$as_me: loading cache $cache_file" >&6;}+ case $cache_file in+ [\\/]* | ?:[\\/]* ) . "$cache_file";;+ *) . "./$cache_file";;+ esac+ fi+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5+printf '%s\n' "$as_me: creating cache $cache_file" >&6;}+ >$cache_file+fi++# Test code for whether the C compiler supports C23 (global declarations)+ac_c_conftest_c23_globals='+/* Does the compiler advertise conformance to C17 or earlier?+ Although GCC 14 does not do that, even with -std=gnu23,+ it is close enough, and defines __STDC_VERSION == 202000L. */+#if !defined __STDC_VERSION__ || __STDC_VERSION__ <= 201710L+# error "Compiler advertises conformance to C17 or earlier"+#endif++// Check alignas.+char alignas (double) c23_aligned_as_double;+char alignas (0) c23_no_special_alignment;+extern char c23_aligned_as_int;+char alignas (0) alignas (int) c23_aligned_as_int;++// Check alignof.+enum+{+ c23_int_alignment = alignof (int),+ c23_int_array_alignment = alignof (int[100]),+ c23_char_alignment = alignof (char)+};+static_assert (0 < -alignof (int), "alignof is signed");++int function_with_unnamed_parameter (int) { return 0; }++void c23_noreturn ();++/* Test parsing of string and char UTF-8 literals (including hex escapes).+ The parens pacify GCC 15. */+bool use_u8 = (!sizeof u8"\xFF") == (!u8'\''x'\'');++bool check_that_bool_works = true | false | !nullptr;+#if !true+# error "true does not work in #if"+#endif+#if false+#elifdef __STDC_VERSION__+#else+# error "#elifdef does not work"+#endif++#ifndef __has_c_attribute+# error "__has_c_attribute not defined"+#endif++#ifndef __has_include+# error "__has_include not defined"+#endif++#define LPAREN() (+#define FORTY_TWO(x) 42+#define VA_OPT_TEST(r, x, ...) __VA_OPT__ (FORTY_TWO r x))+static_assert (VA_OPT_TEST (LPAREN (), 0, <:-) == 42);++static_assert (0b101010 == 42);+static_assert (0B101010 == 42);+static_assert (0xDEAD'\''BEEF == 3'\''735'\''928'\''559);+static_assert (0.500'\''000'\''000 == 0.5);++enum unsignedish : unsigned int { uione = 1 };+static_assert (0 < -uione);++#include <stddef.h>+constexpr nullptr_t null_pointer = nullptr;++static typeof (1 + 1L) two () { return 2; }+static long int three () { return 3; }+'++# Test code for whether the C compiler supports C23 (body of main).+ac_c_conftest_c23_main='+ {+ label_before_declaration:+ int arr[10] = {};+ if (arr[0])+ goto label_before_declaration;+ if (!arr[0])+ goto label_at_end_of_block;+ label_at_end_of_block:+ }+ ok |= !null_pointer;+ ok |= two != three;+'++# Test code for whether the C compiler supports C23 (complete).+ac_c_conftest_c23_program="${ac_c_conftest_c23_globals}++int+main (int, char **)+{+ int ok = 0;+ ${ac_c_conftest_c23_main}+ return ok;+}+"++# Test code for whether the C compiler supports C89 (global declarations)+ac_c_conftest_c89_globals='+/* Do not test the value of __STDC__, because some compilers define it to 0+ or do not define it, while otherwise adequately conforming. */++#include <stddef.h>+#include <stdarg.h>+struct stat;+/* Most of the following tests are stolen from RCS 5.7 src/conf.sh. */+struct buf { int x; };+struct buf * (*rcsopen) (struct buf *, struct stat *, int);+static char *e (char **p, int i)+{+ return p[i];+}+static char *f (char * (*g) (char **, int), char **p, ...)+{+ char *s;+ va_list v;+ va_start (v,p);+ s = g (p, va_arg (v,int));+ va_end (v);+ return s;+}++/* C89 style stringification. */+#define noexpand_stringify(a) #a+const char *stringified = noexpand_stringify(arbitrary+token=sequence);++/* C89 style token pasting. Exercises some of the corner cases that+ e.g. old MSVC gets wrong, but not very hard. */+#define noexpand_concat(a,b) a##b+#define expand_concat(a,b) noexpand_concat(a,b)+extern int vA;+extern int vbee;+#define aye A+#define bee B+int *pvA = &expand_concat(v,aye);+int *pvbee = &noexpand_concat(v,bee);++/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has+ function prototypes and stuff, but not \xHH hex character constants.+ These do not provoke an error unfortunately, instead are silently treated+ as an "x". The following induces an error, until -std is added to get+ proper ANSI mode. Curiously \x00 != x always comes out true, for an+ array size at least. It is necessary to write \x00 == 0 to get something+ that is true only with -std. */+int osf4_cc_array ['\''\x00'\'' == 0 ? 1 : -1];++/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters+ inside strings and character constants. */+#define FOO(x) '\''x'\''+int xlc6_cc_array[FOO(a) == '\''x'\'' ? 1 : -1];++int test (int i, double x);+struct s1 {int (*f) (int a);};+struct s2 {int (*f) (double a);};+int pairnames (int, char **, int *(*)(struct buf *, struct stat *, int),+ int, int);'++# Test code for whether the C compiler supports C89 (body of main).+ac_c_conftest_c89_main='+ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]);+'++# Test code for whether the C compiler supports C99 (global declarations)+ac_c_conftest_c99_globals='+/* Does the compiler advertise C99 conformance? */+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L+# error "Compiler does not advertise C99 conformance"+#endif++// See if C++-style comments work.++#include <stdbool.h>+extern int puts (const char *);+extern int printf (const char *, ...);+extern int dprintf (int, const char *, ...);+extern void *malloc (size_t);+extern void free (void *);++// Check varargs macros. These examples are taken from C99 6.10.3.5.+// dprintf is used instead of fprintf to avoid needing to declare+// FILE and stderr, and "aND" is used instead of "and" to work around+// GCC bug 40564 which is irrelevant here.+#define debug(...) dprintf (2, __VA_ARGS__)+#define showlist(...) puts (#__VA_ARGS__)+#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))+static void+test_varargs_macros (void)+{+ int x = 1234;+ int y = 5678;+ debug ("Flag");+ debug ("X = %d\n", x);+ showlist (The first, second, aND third items.);+ report (x>y, "x is %d but y is %d", x, y);+}++// Check long long types.+#define BIG64 18446744073709551615ull+#define BIG32 4294967295ul+#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)+#if !BIG_OK+ #error "your preprocessor is broken"+#endif+#if BIG_OK+#else+ #error "your preprocessor is broken"+#endif+static long long int bignum = -9223372036854775807LL;+static unsigned long long int ubignum = BIG64;++struct incomplete_array+{+ int datasize;+ double data[];+};++struct named_init {+ int number;+ const wchar_t *name;+ double average;+};++typedef const char *ccp;++static inline int+test_restrict (ccp restrict text)+{+ // Iterate through items via the restricted pointer.+ // Also check for declarations in for loops.+ for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i)+ continue;+ return 0;+}++// Check varargs and va_copy.+static bool+test_varargs (const char *format, ...)+{+ va_list args;+ va_start (args, format);+ va_list args_copy;+ va_copy (args_copy, args);++ const char *str = "";+ int number = 0;+ float fnumber = 0;++ while (*format)+ {+ switch (*format++)+ {+ case '\''s'\'': // string+ str = va_arg (args_copy, const char *);+ break;+ case '\''d'\'': // int+ number = va_arg (args_copy, int);+ break;+ case '\''f'\'': // float+ fnumber = va_arg (args_copy, double);+ break;+ default:+ break;+ }+ }+ va_end (args_copy);+ va_end (args);++ return *str && number && fnumber;+}+'++# Test code for whether the C compiler supports C99 (body of main).+ac_c_conftest_c99_main='+ // Check bool.+ _Bool success = false;+ success |= (argc != 0);++ // Check restrict.+ if (test_restrict ("String literal") == 0)+ success = true;+ const char *restrict newvar = "Another string";++ // Check varargs.+ success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234);+ test_varargs_macros ();++ // Check flexible array members.+ static struct incomplete_array *volatile incomplete_array_pointer;+ struct incomplete_array *ia = incomplete_array_pointer;+ ia->datasize = 10;+ for (int i = 0; i < ia->datasize; ++i)+ ia->data[i] = i * 1.234;+ // Work around memory leak warnings.+ free (ia);++ // Check named initializers.+ struct named_init ni = {+ .number = 34,+ .name = L"Test wide string",+ .average = 543.34343,+ };++ ni.number = 58;++ // Do not test for VLAs, as some otherwise-conforming compilers lack them.+ // C code should instead use __STDC_NO_VLA__; see Autoconf manual.++ // work around unused variable warnings+ ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\''+ || ni.number != 58);+'++# Test code for whether the C compiler supports C11 (global declarations)+ac_c_conftest_c11_globals='+/* Does the compiler advertise C11 conformance? */+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L+# error "Compiler does not advertise C11 conformance"+#endif++// Check _Alignas.+char _Alignas (double) aligned_as_double;+char _Alignas (0) no_special_alignment;+extern char aligned_as_int;+char _Alignas (0) _Alignas (int) aligned_as_int;++// Check _Alignof.+enum+{+ int_alignment = _Alignof (int),+ int_array_alignment = _Alignof (int[100]),+ char_alignment = _Alignof (char)+};+_Static_assert (0 < -_Alignof (int), "_Alignof is signed");++// Check _Noreturn.+int _Noreturn does_not_return (void) { for (;;) continue; }++// Check _Static_assert.+struct test_static_assert+{+ int x;+ _Static_assert (sizeof (int) <= sizeof (long int),+ "_Static_assert does not work in struct");+ long int y;+};++// Check UTF-8 literals.+#define u8 syntax error!+char const utf8_literal[] = u8"happens to be ASCII" "another string";++// Check duplicate typedefs.+typedef long *long_ptr;+typedef long int *long_ptr;+typedef long_ptr long_ptr;++// Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1.+struct anonymous+{+ union {+ struct { int i; int j; };+ struct { int k; long int l; } w;+ };+ int m;+} v1;+'++# Test code for whether the C compiler supports C11 (body of main).+ac_c_conftest_c11_main='+ _Static_assert ((offsetof (struct anonymous, i)+ == offsetof (struct anonymous, w.k)),+ "Anonymous union alignment botch");+ v1.i = 2;+ v1.w.k = 5;+ ok |= v1.i != 5;+'++# Test code for whether the C compiler supports C11 (complete).+ac_c_conftest_c11_program="${ac_c_conftest_c89_globals}+${ac_c_conftest_c99_globals}+${ac_c_conftest_c11_globals}++int+main (int argc, char **argv)+{+ int ok = 0;+ ${ac_c_conftest_c89_main}+ ${ac_c_conftest_c99_main}+ ${ac_c_conftest_c11_main}+ return ok;+}+"++# Test code for whether the C compiler supports C99 (complete).+ac_c_conftest_c99_program="${ac_c_conftest_c89_globals}+${ac_c_conftest_c99_globals}++int+main (int argc, char **argv)+{+ int ok = 0;+ ${ac_c_conftest_c89_main}+ ${ac_c_conftest_c99_main}+ return ok;+}+"++# Test code for whether the C compiler supports C89 (complete).+ac_c_conftest_c89_program="${ac_c_conftest_c89_globals}++int+main (int argc, char **argv)+{+ int ok = 0;+ ${ac_c_conftest_c89_main}+ return ok;+}+"++as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H"+as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H"+as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H"+as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H"+as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H"+as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H"+as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H"+as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H"+as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H"++# Auxiliary files required by this configure script.+ac_aux_files="config.guess config.sub"++# Locations in which to look for auxiliary files.+ac_aux_dir_candidates="${srcdir}${PATH_SEPARATOR}${srcdir}/..${PATH_SEPARATOR}${srcdir}/../.."++# Search for a directory containing all of the required auxiliary files,+# $ac_aux_files, from the $PATH-style list $ac_aux_dir_candidates.+# If we don't find one directory that contains all the files we need,+# we report the set of missing files from the *first* directory in+# $ac_aux_dir_candidates and give up.+ac_missing_aux_files=""+ac_first_candidate=:+printf '%s\n' "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+as_found=false+for as_dir in $ac_aux_dir_candidates+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ as_found=:++ printf '%s\n' "$as_me:${as_lineno-$LINENO}: trying $as_dir" >&5+ ac_aux_dir_found=yes+ ac_install_sh=+ for ac_aux in $ac_aux_files+ do+ # As a special case, if "install-sh" is required, that requirement+ # can be satisfied by any of "install-sh", "install.sh", or "shtool",+ # and $ac_install_sh is set appropriately for whichever one is found.+ if test x"$ac_aux" = x"install-sh"+ then+ if test -f "${as_dir}install-sh"; then+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: ${as_dir}install-sh found" >&5+ ac_install_sh="${as_dir}install-sh -c"+ elif test -f "${as_dir}install.sh"; then+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: ${as_dir}install.sh found" >&5+ ac_install_sh="${as_dir}install.sh -c"+ elif test -f "${as_dir}shtool"; then+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: ${as_dir}shtool found" >&5+ ac_install_sh="${as_dir}shtool install -c"+ else+ ac_aux_dir_found=no+ if $ac_first_candidate; then+ ac_missing_aux_files="${ac_missing_aux_files} install-sh"+ else+ break+ fi+ fi+ else+ if test -f "${as_dir}${ac_aux}"; then+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: ${as_dir}${ac_aux} found" >&5+ else+ ac_aux_dir_found=no+ if $ac_first_candidate; then+ ac_missing_aux_files="${ac_missing_aux_files} ${ac_aux}"+ else+ break+ fi+ fi+ fi+ done+ if test "$ac_aux_dir_found" = yes; then+ ac_aux_dir="$as_dir"+ break+ fi+ ac_first_candidate=false++ as_found=false+done+IFS=$as_save_IFS+if $as_found+then :++else case e in #(+ e) as_fn_error $? "cannot find required auxiliary files:$ac_missing_aux_files" "$LINENO" 5 ;;+esac+fi+++# These three variables are undocumented and unsupported,+# and are intended to be withdrawn in a future Autoconf release.+# They can cause serious problems if a builder's source tree is in a directory+# whose full name contains unusual characters.+if test -f "${ac_aux_dir}config.guess"; then+ ac_config_guess="$SHELL ${ac_aux_dir}config.guess"+fi+if test -f "${ac_aux_dir}config.sub"; then+ ac_config_sub="$SHELL ${ac_aux_dir}config.sub"+fi+if test -f "$ac_aux_dir/configure"; then+ ac_configure="$SHELL ${ac_aux_dir}configure"+fi++# Check that the precious variables saved in the cache have kept the same+# value.+ac_cache_corrupted=false+for ac_var in $ac_precious_vars; do+ eval ac_old_set=\$ac_cv_env_${ac_var}_set+ eval ac_new_set=\$ac_env_${ac_var}_set+ eval ac_old_val=\$ac_cv_env_${ac_var}_value+ eval ac_new_val=\$ac_env_${ac_var}_value+ case $ac_old_set,$ac_new_set in+ set,)+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&5+printf '%s\n' "$as_me: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&2;}+ ac_cache_corrupted=: ;;+ ,set)+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was not set in the previous run" >&5+printf '%s\n' "$as_me: error: '$ac_var' was not set in the previous run" >&2;}+ ac_cache_corrupted=: ;;+ ,);;+ *)+ if test "x$ac_old_val" != "x$ac_new_val"; then+ # differences in whitespace do not lead to failure.+ ac_old_val_w=+ for ac_val in x $ac_old_val; do+ ac_old_val_w="$ac_old_val_w $ac_val"+ done+ ac_new_val_w=+ for ac_val in x $ac_new_val; do+ ac_new_val_w="$ac_new_val_w $ac_val"+ done+ if test "$ac_old_val_w" != "$ac_new_val_w"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: '$ac_var' has changed since the previous run:" >&5+printf '%s\n' "$as_me: error: '$ac_var' has changed since the previous run:" >&2;}+ ac_cache_corrupted=:+ else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&5+printf '%s\n' "$as_me: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&2;}+ eval $ac_var=\$ac_old_val+ fi+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: former value: '$ac_old_val'" >&5+printf '%s\n' "$as_me: former value: '$ac_old_val'" >&2;}+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: current value: '$ac_new_val'" >&5+printf '%s\n' "$as_me: current value: '$ac_new_val'" >&2;}+ fi;;+ esac+ # Pass precious variables to config.status.+ if test "$ac_new_set" = set; then+ case $ac_new_val in+ *\'*) ac_arg=$ac_var=`printf '%s\n' "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;+ *) ac_arg=$ac_var=$ac_new_val ;;+ esac+ case " $ac_configure_args " in+ *" '$ac_arg' "*) ;; # Avoid dups. Use of quotes ensures accuracy.+ *) as_fn_append ac_configure_args " '$ac_arg'" ;;+ esac+ fi+done+if $ac_cache_corrupted; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5+printf '%s\n' "$as_me: error: changes in the environment can compromise the build" >&2;}+ as_fn_error $? "run '${MAKE-make} distclean' and/or 'rm $cache_file'+ and start over" "$LINENO" 5+fi+## -------------------- ##+## Main body of script. ##+## -------------------- ##+++# Determine whether it's possible to make 'echo' print without a newline.+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed+# for compatibility with existing Makefiles.+ECHO_C= ECHO_N= ECHO_T=+case `echo -n x` in #(((((+-n*)+ case `echo 'xy\c'` in+ *c*) ECHO_T=' ';; # ECHO_T is single tab character.+ xy) ECHO_C='\c';;+ *) echo `echo ksh88 bug on AIX 6.1` > /dev/null+ ECHO_T=' ';;+ esac;;+*)+ ECHO_N='-n';;+esac++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu++++ac_includes_default="#ifndef _WIN32+# define _GNU_SOURCE 1 /* for struct ucred on Linux */+#endif+$ac_includes_default++#ifdef _WIN32+# include <winsock2.h>+# include <ws2tcpip.h>+# define IPV6_V6ONLY 27+#endif++#ifdef HAVE_LIMITS_H+# include <limits.h>+#endif+#ifdef HAVE_STDLIB_H+# include <stdlib.h>+#endif+#ifdef HAVE_UNISTD_H+#include <unistd.h>+#endif+#ifdef HAVE_SYS_TYPES_H+# include <sys/types.h>+#endif+#ifdef HAVE_FCNTL_H+# include <fcntl.h>+#endif+#ifdef HAVE_SYS_UIO_H+# include <sys/uio.h>+#endif+#ifdef HAVE_SYS_SOCKET_H+# include <sys/socket.h>+#endif+#ifdef HAVE_NETINET_IN_H+# include <netinet/in.h>+#endif+#ifdef HAVE_NETINET_TCP_H+# include <netinet/tcp.h>+#endif+#ifdef HAVE_SYS_UN_H+# include <sys/un.h>+#endif+#ifdef HAVE_ARPA_INET_H+# include <arpa/inet.h>+#endif+#ifdef HAVE_NETDB_H+#include <netdb.h>+#endif+#ifdef HAVE_NET_IF_H+# include <net/if.h>+#endif+#ifdef HAVE_NETIOAPI_H+# include <netioapi.h>+#endif+"++++ac_config_headers="$ac_config_headers include/HsNetworkConfig.h"++++++ # Make sure we can run config.sub.+$SHELL "${ac_aux_dir}config.sub" sun4 >/dev/null 2>&1 ||+ as_fn_error $? "cannot run $SHELL ${ac_aux_dir}config.sub" "$LINENO" 5++{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking build system type" >&5+printf %s "checking build system type... " >&6; }+if test ${ac_cv_build+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) ac_build_alias=$build_alias+test "x$ac_build_alias" = x &&+ ac_build_alias=`$SHELL "${ac_aux_dir}config.guess"`+test "x$ac_build_alias" = x &&+ as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5+ac_cv_build=`$SHELL "${ac_aux_dir}config.sub" $ac_build_alias` ||+ as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $ac_build_alias failed" "$LINENO" 5+ ;;+esac+fi+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5+printf '%s\n' "$ac_cv_build" >&6; }+case $ac_cv_build in+*-*-*) ;;+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;+esac+build=$ac_cv_build+ac_save_IFS=$IFS; IFS='-'+set x $ac_cv_build+shift+build_cpu=$1+build_vendor=$2+shift; shift+# Remember, the first character of IFS is used to create $*,+# except with old shells:+build_os=$*+IFS=$ac_save_IFS+case $build_os in *\ *) build_os=`printf '%s\n' "$build_os" | sed 's/ /-/g'`;; esac+++{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking host system type" >&5+printf %s "checking host system type... " >&6; }+if test ${ac_cv_host+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test "x$host_alias" = x; then+ ac_cv_host=$ac_cv_build+else+ ac_cv_host=`$SHELL "${ac_aux_dir}config.sub" $host_alias` ||+ as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $host_alias failed" "$LINENO" 5+fi+ ;;+esac+fi+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5+printf '%s\n' "$ac_cv_host" >&6; }+case $ac_cv_host in+*-*-*) ;;+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;+esac+host=$ac_cv_host+ac_save_IFS=$IFS; IFS='-'+set x $ac_cv_host+shift+host_cpu=$1+host_vendor=$2+shift; shift+# Remember, the first character of IFS is used to create $*,+# except with old shells:+host_os=$*+IFS=$ac_save_IFS+case $host_os in *\ *) host_os=`printf '%s\n' "$host_os" | sed 's/ /-/g'`;; esac+++++# Check whether --with-cc was given.+if test ${with_cc+y}+then :+ withval=$with_cc; CC=$withval+fi++++++++++++++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu+if test -n "$ac_tool_prefix"; then+ # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.+set dummy ${ac_tool_prefix}gcc; ac_word=$2+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_CC="${ac_tool_prefix}gcc"+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi ;;+esac+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf '%s\n' "$CC" >&6; }+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+fi+++fi+if test -z "$ac_cv_prog_CC"; then+ ac_ct_CC=$CC+ # Extract the first word of "gcc", so it can be a program name with args.+set dummy gcc; ac_word=$2+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test -n "$ac_ct_CC"; then+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_ac_ct_CC="gcc"+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi ;;+esac+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf '%s\n' "$ac_ct_CC" >&6; }+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+fi++ if test "x$ac_ct_CC" = x; then+ CC=""+ else+ case $cross_compiling:$ac_tool_warned in+yes:)+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+ CC=$ac_ct_CC+ fi+else+ CC="$ac_cv_prog_CC"+fi++if test -z "$CC"; then+ if test -n "$ac_tool_prefix"; then+ # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.+set dummy ${ac_tool_prefix}cc; ac_word=$2+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_CC="${ac_tool_prefix}cc"+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi ;;+esac+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf '%s\n' "$CC" >&6; }+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+fi+++ fi+fi+if test -z "$CC"; then+ # Extract the first word of "cc", so it can be a program name with args.+set dummy cc; ac_word=$2+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+ ac_prog_rejected=no+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ if test "$as_dir$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then+ ac_prog_rejected=yes+ continue+ fi+ ac_cv_prog_CC="cc"+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++if test $ac_prog_rejected = yes; then+ # We found a bogon in the path, so make sure we never use it.+ set dummy $ac_cv_prog_CC+ shift+ if test $# != 0; then+ # We chose a different compiler from the bogus one.+ # However, it has the same basename, so the bogon will be chosen+ # first if we set CC to just the basename; use the full file name.+ shift+ ac_cv_prog_CC="$as_dir$ac_word${1+' '}$@"+ fi+fi+fi ;;+esac+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf '%s\n' "$CC" >&6; }+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+fi+++fi+if test -z "$CC"; then+ if test -n "$ac_tool_prefix"; then+ for ac_prog in cl.exe+ do+ # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.+set dummy $ac_tool_prefix$ac_prog; ac_word=$2+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_CC="$ac_tool_prefix$ac_prog"+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi ;;+esac+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf '%s\n' "$CC" >&6; }+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+fi+++ test -n "$CC" && break+ done+fi+if test -z "$CC"; then+ ac_ct_CC=$CC+ for ac_prog in cl.exe+do+ # Extract the first word of "$ac_prog", so it can be a program name with args.+set dummy $ac_prog; ac_word=$2+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test -n "$ac_ct_CC"; then+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_ac_ct_CC="$ac_prog"+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi ;;+esac+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf '%s\n' "$ac_ct_CC" >&6; }+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+fi+++ test -n "$ac_ct_CC" && break+done++ if test "x$ac_ct_CC" = x; then+ CC=""+ else+ case $cross_compiling:$ac_tool_warned in+yes:)+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+ CC=$ac_ct_CC+ fi+fi++fi+if test -z "$CC"; then+ if test -n "$ac_tool_prefix"; then+ # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args.+set dummy ${ac_tool_prefix}clang; ac_word=$2+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test -n "$CC"; then+ ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_CC="${ac_tool_prefix}clang"+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi ;;+esac+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf '%s\n' "$CC" >&6; }+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+fi+++fi+if test -z "$ac_cv_prog_CC"; then+ ac_ct_CC=$CC+ # Extract the first word of "clang", so it can be a program name with args.+set dummy clang; ac_word=$2+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) if test -n "$ac_ct_CC"; then+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ for ac_exec_ext in '' $ac_executable_extensions; do+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+ ac_cv_prog_ac_ct_CC="clang"+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+ break 2+ fi+done+ done+IFS=$as_save_IFS++fi ;;+esac+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf '%s\n' "$ac_ct_CC" >&6; }+else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+fi++ if test "x$ac_ct_CC" = x; then+ CC=""+ else+ case $cross_compiling:$ac_tool_warned in+yes:)+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf '%s\n' "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+ CC=$ac_ct_CC+ fi+else+ CC="$ac_cv_prog_CC"+fi++fi+++test -z "$CC" && { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}+as_fn_error $? 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" >&6; }+ac_link_default=`printf '%s\n' "$ac_link" | sed 's/ -o *conftest[^ ]*//'`++# The possible output files:+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"++ac_rmfiles=+for ac_file in $ac_files+do+ case $ac_file in+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;+ * ) ac_rmfiles="$ac_rmfiles $ac_file";;+ esac+done+rm -f $ac_rmfiles++if { { ac_try="$ac_link_default"+case "(($ac_try" in+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+ *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf '%s\n' "$ac_try_echo"; } >&5+ (eval "$ac_link_default") 2>&5+ ac_status=$?+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+ test $ac_status = 0; }+then :+ # Autoconf-2.13 could set the ac_cv_exeext variable to 'no'.+# So ignore a value of 'no', otherwise this would lead to 'EXEEXT = no'+# in a Makefile. We should not override ac_cv_exeext if it was cached,+# so that the user can short-circuit this test for compilers unknown to+# Autoconf.+for ac_file in $ac_files ''+do+ test -f "$ac_file" || continue+ case $ac_file in+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )+ ;;+ [ab].out )+ # We found the default executable, but exeext='' is most+ # certainly right.+ break;;+ *.* )+ if test ${ac_cv_exeext+y} && test "$ac_cv_exeext" != no;+ then :; else+ ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`+ fi+ # We set ac_cv_exeext here because the later test for it is not+ # safe: cross compilers may not add the suffix if given an '-o'+ # argument, so we may need to know it at that point already.+ # Even if this section looks crufty: it has the advantage of+ # actually working.+ break;;+ * )+ break;;+ esac+done+test "$ac_cv_exeext" = no && ac_cv_exeext=++else case e in #(+ e) ac_file='' ;;+esac+fi+if test -z "$ac_file"+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf '%s\n' "no" >&6; }+printf '%s\n' "$as_me: failed program was:" >&5+sed 's/^/| /' conftest.$ac_ext >&5++{ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}+as_fn_error 77 "C compiler cannot create executables+See 'config.log' for more details" "$LINENO" 5; }+else case e in #(+ e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: yes" >&5+printf '%s\n' "yes" >&6; } ;;+esac+fi+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5+printf %s "checking for C compiler default output file name... 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For instance with Cygwin, 'ls conftest' will+# work properly (i.e., refer to 'conftest.exe'), while it won't with+# 'rm'.+for ac_file in conftest.exe conftest conftest.*; do+ test -f "$ac_file" || continue+ case $ac_file in+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;+ *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`+ break;;+ * ) break;;+ esac+done+else case e in #(+ e) { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}+as_fn_error $? "cannot compute suffix of executables: cannot compile and link+See 'config.log' for more details" "$LINENO" 5; } ;;+esac+fi+rm -f conftest conftest$ac_cv_exeext+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5+printf '%s\n' "$ac_cv_exeext" >&6; }++rm -f conftest.$ac_ext+EXEEXT=$ac_cv_exeext+ac_exeext=$EXEEXT+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+#include <stdio.h>+int+main (void)+{+FILE *f = fopen ("conftest.out", "w");+ if (!f)+ return 1;+ return ferror (f) || fclose (f) != 0;++ ;+ return 0;+}+_ACEOF+ac_clean_files="$ac_clean_files conftest.out"+# Check that the compiler produces executables we can run. If not, either+# the compiler is broken, or we cross compile.+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5+printf %s "checking whether we are cross compiling... " >&6; }+if test "$cross_compiling" != yes; then+ { { ac_try="$ac_link"+case "(($ac_try" in+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+ *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf '%s\n' "$ac_try_echo"; } >&5+ (eval "$ac_link") 2>&5+ ac_status=$?+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+ test $ac_status = 0; }+ if { ac_try='./conftest$ac_cv_exeext'+ { { case "(($ac_try" in+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+ *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf '%s\n' "$ac_try_echo"; } >&5+ (eval "$ac_try") 2>&5+ ac_status=$?+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+ test $ac_status = 0; }; }; then+ cross_compiling=no+ else+ if test "$cross_compiling" = maybe; then+ cross_compiling=yes+ else+ { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}+as_fn_error 77 "cannot run C compiled programs.+If you meant to cross compile, use '--host'.+See 'config.log' for more details" "$LINENO" 5; }+ fi+ fi+fi+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5+printf '%s\n' "$cross_compiling" >&6; }++rm -f conftest.$ac_ext conftest$ac_cv_exeext \+ conftest.o conftest.obj conftest.out+ac_clean_files=$ac_clean_files_save+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5+printf %s "checking for suffix of object files... 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" >&6; }+if test ${ac_cv_prog_cc_c23+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) ac_cv_prog_cc_c23=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$ac_c_conftest_c23_program+_ACEOF+for ac_arg in '' -std=gnu23+do+ CC="$ac_save_CC $ac_arg"+ if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_prog_cc_c23=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+ test "x$ac_cv_prog_cc_c23" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC ;;+esac+fi++if test "x$ac_cv_prog_cc_c23" = xno+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf '%s\n' "unsupported" >&6; }+else case e in #(+ e) if test "x$ac_cv_prog_cc_c23" = x+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf '%s\n' "none needed" >&6; }+else case e in #(+ e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c23" >&5+printf '%s\n' "$ac_cv_prog_cc_c23" >&6; }+ CC="$CC $ac_cv_prog_cc_c23" ;;+esac+fi+ ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c23+ ac_prog_cc_stdc=c23 ;;+esac+fi+fi+if test x$ac_prog_cc_stdc = xno+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5+printf %s "checking for $CC option to enable C11 features... " >&6; }+if test ${ac_cv_prog_cc_c11+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) ac_cv_prog_cc_c11=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$ac_c_conftest_c11_program+_ACEOF+for ac_arg in '' -std=gnu11 -std:c11+do+ CC="$ac_save_CC $ac_arg"+ if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_prog_cc_c11=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+ test "x$ac_cv_prog_cc_c11" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC ;;+esac+fi++if test "x$ac_cv_prog_cc_c11" = xno+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf '%s\n' "unsupported" >&6; }+else case e in #(+ e) if test "x$ac_cv_prog_cc_c11" = x+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf '%s\n' "none needed" >&6; }+else case e in #(+ e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5+printf '%s\n' "$ac_cv_prog_cc_c11" >&6; }+ CC="$CC $ac_cv_prog_cc_c11" ;;+esac+fi+ ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11+ ac_prog_cc_stdc=c11 ;;+esac+fi+fi+if test x$ac_prog_cc_stdc = xno+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5+printf %s "checking for $CC option to enable C99 features... " >&6; }+if test ${ac_cv_prog_cc_c99+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) ac_cv_prog_cc_c99=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$ac_c_conftest_c99_program+_ACEOF+for ac_arg in '' -std=gnu99 -std=c99 -c99 -qlanglvl=extc1x -qlanglvl=extc99 -AC99 -D_STDC_C99=+do+ CC="$ac_save_CC $ac_arg"+ if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_prog_cc_c99=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+ test "x$ac_cv_prog_cc_c99" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC ;;+esac+fi++if test "x$ac_cv_prog_cc_c99" = xno+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf '%s\n' "unsupported" >&6; }+else case e in #(+ e) if test "x$ac_cv_prog_cc_c99" = x+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf '%s\n' "none needed" >&6; }+else case e in #(+ e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5+printf '%s\n' "$ac_cv_prog_cc_c99" >&6; }+ CC="$CC $ac_cv_prog_cc_c99" ;;+esac+fi+ ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99+ ac_prog_cc_stdc=c99 ;;+esac+fi+fi+if test x$ac_prog_cc_stdc = xno+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5+printf %s "checking for $CC option to enable C89 features... " >&6; }+if test ${ac_cv_prog_cc_c89+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) ac_cv_prog_cc_c89=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+$ac_c_conftest_c89_program+_ACEOF+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"+do+ CC="$ac_save_CC $ac_arg"+ if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_prog_cc_c89=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+ test "x$ac_cv_prog_cc_c89" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC ;;+esac+fi++if test "x$ac_cv_prog_cc_c89" = xno+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf '%s\n' "unsupported" >&6; }+else case e in #(+ e) if test "x$ac_cv_prog_cc_c89" = x+then :+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf '%s\n' "none needed" >&6; }+else case e in #(+ e) { printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5+printf '%s\n' "$ac_cv_prog_cc_c89" >&6; }+ CC="$CC $ac_cv_prog_cc_c89" ;;+esac+fi+ ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89+ ac_prog_cc_stdc=c89 ;;+esac+fi+fi++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu++++# Check whether --with-compiler was given.+if test ${with_compiler+y}+then :+ withval=$with_compiler; HC=$withval+fi+++# Check whether --with-hc was given.+if test ${with_hc+y}+then :+ withval=$with_hc; HC=$withval+fi++if test -z "$HC"+then :+ HC=ghc+fi+++{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5+printf %s "checking for an ANSI C-conforming const... " >&6; }+if test ${ac_cv_c_const+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */++int+main (void)+{++#ifndef __cplusplus+ /* Ultrix mips cc rejects this sort of thing. */+ typedef int charset[2];+ const charset cs = { 0, 0 };+ /* SunOS 4.1.1 cc rejects this. */+ char const *const *pcpcc;+ char **ppc;+ /* NEC SVR4.0.2 mips cc rejects this. */+ struct point {int x, y;};+ static struct point const zero = {0,0};+ /* IBM XL C 1.02.0.0 rejects this.+ It does not let you subtract one const X* pointer from another in+ an arm of an if-expression whose if-part is not a constant+ expression */+ const char *g = "string";+ pcpcc = &g + (g ? g-g : 0);+ /* HPUX 7.0 cc rejects these. */+ ++pcpcc;+ ppc = (char**) pcpcc;+ pcpcc = (char const *const *) ppc;+ { /* SCO 3.2v4 cc rejects this sort of thing. */+ char tx;+ char *t = &tx;+ char const *s = 0 ? (char *) 0 : (char const *) 0;++ *t++ = 0;+ if (s) return 0;+ }+ { /* Derived from code rejected by Sun C 1.0 and similar vintage. */+ int x[] = {25, 17};+ typedef int const *iptr;+ iptr foo = &x[0];+ ++foo;+ if (!*foo) return 0;+ }+ { /* IBM XL C 1.02.0.0 rejects this sort of thing, saying+ "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */+ struct s { int j; const int *ap[3]; } bx;+ struct s *b = &bx; b->j = 5;+ }+ { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */+ const int foo = 10;+ if (!foo) return 0;+ }+ return !cs[0] && !zero.x;+#endif++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_c_const=yes+else case e in #(+ e) ac_cv_c_const=no ;;+esac+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;+esac+fi+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5+printf '%s\n' "$ac_cv_c_const" >&6; }+if test $ac_cv_c_const = no; then++printf '%s\n' "#define const /**/" >>confdefs.h++fi+++ac_header= ac_cache=+for ac_item in $ac_header_c_list+do+ if test $ac_cache; then+ ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"+ if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then+ printf '%s\n' "#define $ac_item 1" >> confdefs.h+ fi+ ac_header= ac_cache=+ elif test $ac_header; then+ ac_cache=$ac_item+ else+ ac_header=$ac_item+ fi+done+++++++++if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes+then :++printf '%s\n' "#define STDC_HEADERS 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "limits.h" "ac_cv_header_limits_h" "$ac_includes_default"+if test "x$ac_cv_header_limits_h" = xyes+then :+ printf '%s\n' "#define HAVE_LIMITS_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "stdlib.h" "ac_cv_header_stdlib_h" "$ac_includes_default"+if test "x$ac_cv_header_stdlib_h" = xyes+then :+ printf '%s\n' "#define HAVE_STDLIB_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "unistd.h" "ac_cv_header_unistd_h" "$ac_includes_default"+if test "x$ac_cv_header_unistd_h" = xyes+then :+ printf '%s\n' "#define HAVE_UNISTD_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "sys/types.h" "ac_cv_header_sys_types_h" "$ac_includes_default"+if test "x$ac_cv_header_sys_types_h" = xyes+then :+ printf '%s\n' "#define HAVE_SYS_TYPES_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "fcntl.h" "ac_cv_header_fcntl_h" "$ac_includes_default"+if test "x$ac_cv_header_fcntl_h" = xyes+then :+ printf '%s\n' "#define HAVE_FCNTL_H 1" >>confdefs.h++fi++ac_fn_c_check_header_compile "$LINENO" "sys/uio.h" "ac_cv_header_sys_uio_h" "$ac_includes_default"+if test "x$ac_cv_header_sys_uio_h" = xyes+then :+ printf '%s\n' "#define HAVE_SYS_UIO_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "sys/socket.h" "ac_cv_header_sys_socket_h" "$ac_includes_default"+if test "x$ac_cv_header_sys_socket_h" = xyes+then :+ printf '%s\n' "#define HAVE_SYS_SOCKET_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "netinet/in.h" "ac_cv_header_netinet_in_h" "$ac_includes_default"+if test "x$ac_cv_header_netinet_in_h" = xyes+then :+ printf '%s\n' "#define HAVE_NETINET_IN_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "netinet/tcp.h" "ac_cv_header_netinet_tcp_h" "$ac_includes_default"+if test "x$ac_cv_header_netinet_tcp_h" = xyes+then :+ printf '%s\n' "#define HAVE_NETINET_TCP_H 1" >>confdefs.h++fi++ac_fn_c_check_header_compile "$LINENO" "sys/un.h" "ac_cv_header_sys_un_h" "$ac_includes_default"+if test "x$ac_cv_header_sys_un_h" = xyes+then :+ printf '%s\n' "#define HAVE_SYS_UN_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "arpa/inet.h" "ac_cv_header_arpa_inet_h" "$ac_includes_default"+if test "x$ac_cv_header_arpa_inet_h" = xyes+then :+ printf '%s\n' "#define HAVE_ARPA_INET_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "netdb.h" "ac_cv_header_netdb_h" "$ac_includes_default"+if test "x$ac_cv_header_netdb_h" = xyes+then :+ printf '%s\n' "#define HAVE_NETDB_H 1" >>confdefs.h++fi++ac_fn_c_check_header_compile "$LINENO" "net/if.h" "ac_cv_header_net_if_h" "$ac_includes_default"+if test "x$ac_cv_header_net_if_h" = xyes+then :+ printf '%s\n' "#define HAVE_NET_IF_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "netioapi.h" "ac_cv_header_netioapi_h" "$ac_includes_default"+if test "x$ac_cv_header_netioapi_h" = xyes+then :+ printf '%s\n' "#define HAVE_NETIOAPI_H 1" >>confdefs.h++fi+++ac_fn_c_check_type "$LINENO" "struct ucred" "ac_cv_type_struct_ucred" "$ac_includes_default"+if test "x$ac_cv_type_struct_ucred" = xyes+then :++printf '%s\n' "#define HAVE_STRUCT_UCRED 1" >>confdefs.h+++fi+++ac_fn_c_check_func "$LINENO" "gai_strerror" "ac_cv_func_gai_strerror"+if test "x$ac_cv_func_gai_strerror" = xyes+then :+ printf '%s\n' "#define HAVE_GAI_STRERROR 1" >>confdefs.h++fi+ac_fn_c_check_func "$LINENO" "gethostent" "ac_cv_func_gethostent"+if test "x$ac_cv_func_gethostent" = xyes+then :+ printf '%s\n' "#define HAVE_GETHOSTENT 1" >>confdefs.h++fi+ac_fn_c_check_func "$LINENO" "accept4" "ac_cv_func_accept4"+if test "x$ac_cv_func_accept4" = xyes+then :+ printf '%s\n' "#define HAVE_ACCEPT4 1" >>confdefs.h++fi++ac_fn_c_check_func "$LINENO" "getpeereid" "ac_cv_func_getpeereid"+if test "x$ac_cv_func_getpeereid" = xyes+then :+ printf '%s\n' "#define HAVE_GETPEEREID 1" >>confdefs.h++fi+++{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC options to detect undeclared functions" >&5+printf %s "checking for $CC options to detect undeclared functions... " >&6; }+if test ${ac_cv_c_undeclared_builtin_options+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) ac_save_CFLAGS=$CFLAGS+ ac_cv_c_undeclared_builtin_options='cannot detect'+ for ac_arg in '' -fno-builtin; do+ CFLAGS="$ac_save_CFLAGS $ac_arg"+ # This test program should *not* compile successfully.+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */++int+main (void)+{+(void) strchr;+ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :++else case e in #(+ e) # This test program should compile successfully.+ # No library function is consistently available on+ # freestanding implementations, so test against a dummy+ # declaration. Include always-available headers on the+ # off chance that they somehow elicit warnings.+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+#include <float.h>+#include <limits.h>+#include <stdarg.h>+#include <stddef.h>+extern void ac_decl (int, char *);++int+main (void)+{+(void) ac_decl (0, (char *) 0);+ (void) ac_decl;++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ if test x"$ac_arg" = x+then :+ ac_cv_c_undeclared_builtin_options='none needed'+else case e in #(+ e) ac_cv_c_undeclared_builtin_options=$ac_arg ;;+esac+fi+ break+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext ;;+esac+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+ done+ CFLAGS=$ac_save_CFLAGS+ ;;+esac+fi+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_undeclared_builtin_options" >&5+printf '%s\n' "$ac_cv_c_undeclared_builtin_options" >&6; }+ case $ac_cv_c_undeclared_builtin_options in #(+ 'cannot detect') :+ { { printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5+printf '%s\n' "$as_me: error: in '$ac_pwd':" >&2;}+as_fn_error $? "cannot make $CC report undeclared builtins+See 'config.log' for more details" "$LINENO" 5; } ;; #(+ 'none needed') :+ ac_c_undeclared_builtin_options='' ;; #(+ *) :+ ac_c_undeclared_builtin_options=$ac_cv_c_undeclared_builtin_options ;;+esac++{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: checking for $CC options to ignore future-version functions" >&5+printf %s "checking for $CC options to ignore future-version functions... " >&6; }+if test ${ac_cv_c_future_darwin_options+y}+then :+ printf %s "(cached) " >&6+else case e in #(+ e) ac_compile_saved="$ac_compile"+ ac_compile="$ac_compile -Werror=unguarded-availability-new"+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h. */+#if ! (defined __APPLE__ && defined __MACH__)+ #error "-Werror=unguarded-availability-new not needed here"+ #endif++int+main (void)+{++ ;+ return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+ ac_cv_c_future_darwin_options='-Werror=unguarded-availability-new'+else case e in #(+ e) ac_cv_c_future_darwin_options='none needed' ;;+esac+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+ ac_compile="$ac_compile_saved"+ ;;+esac+fi+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_future_darwin_options" >&5+printf '%s\n' "$ac_cv_c_future_darwin_options" >&6; }+ case $ac_cv_c_future_darwin_options in #(+ 'none needed') :+ ac_c_future_darwin_options='' ;; #(+ *) :+ ac_c_future_darwin_options=$ac_cv_c_future_darwin_options ;;+esac++ac_fn_check_decl "$LINENO" "AI_ADDRCONFIG" "ac_cv_have_decl_AI_ADDRCONFIG" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_AI_ADDRCONFIG" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_AI_ADDRCONFIG $ac_have_decl" >>confdefs.h+ac_fn_check_decl "$LINENO" "AI_ALL" "ac_cv_have_decl_AI_ALL" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_AI_ALL" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_AI_ALL $ac_have_decl" >>confdefs.h+ac_fn_check_decl "$LINENO" "AI_NUMERICSERV" "ac_cv_have_decl_AI_NUMERICSERV" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_AI_NUMERICSERV" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_AI_NUMERICSERV $ac_have_decl" >>confdefs.h+ac_fn_check_decl "$LINENO" "AI_V4MAPPED" "ac_cv_have_decl_AI_V4MAPPED" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_AI_V4MAPPED" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_AI_V4MAPPED $ac_have_decl" >>confdefs.h++ac_fn_check_decl "$LINENO" "IPV6_V6ONLY" "ac_cv_have_decl_IPV6_V6ONLY" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_IPV6_V6ONLY" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_IPV6_V6ONLY $ac_have_decl" >>confdefs.h++ac_fn_check_decl "$LINENO" "IPPROTO_IP" "ac_cv_have_decl_IPPROTO_IP" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_IPPROTO_IP" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_IPPROTO_IP $ac_have_decl" >>confdefs.h+ac_fn_check_decl "$LINENO" "IPPROTO_TCP" "ac_cv_have_decl_IPPROTO_TCP" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_IPPROTO_TCP" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_IPPROTO_TCP $ac_have_decl" >>confdefs.h+ac_fn_check_decl "$LINENO" "IPPROTO_IPV6" "ac_cv_have_decl_IPPROTO_IPV6" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_IPPROTO_IPV6" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_IPPROTO_IPV6 $ac_have_decl" >>confdefs.h++ac_fn_check_decl "$LINENO" "SO_PEERCRED" "ac_cv_have_decl_SO_PEERCRED" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_SO_PEERCRED" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_SO_PEERCRED $ac_have_decl" >>confdefs.h++ac_fn_check_decl "$LINENO" "IP_DONTFRAG" "ac_cv_have_decl_IP_DONTFRAG" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_IP_DONTFRAG" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_IP_DONTFRAG $ac_have_decl" >>confdefs.h++ac_fn_check_decl "$LINENO" "IP_MTU_DISCOVER" "ac_cv_have_decl_IP_MTU_DISCOVER" "$ac_includes_default" "$ac_c_undeclared_builtin_options$ac_c_future_darwin_options" "CFLAGS"+if test "x$ac_cv_have_decl_IP_MTU_DISCOVER" = xyes+then :+ ac_have_decl=1+else case e in #(+ e) ac_have_decl=0 ;;+esac+fi+printf '%s\n' "#define HAVE_DECL_IP_MTU_DISCOVER $ac_have_decl" >>confdefs.h+++ac_fn_c_check_member "$LINENO" "struct msghdr" "msg_control" "ac_cv_member_struct_msghdr_msg_control" "$ac_includes_default"+if test "x$ac_cv_member_struct_msghdr_msg_control" = xyes+then :++printf '%s\n' "#define HAVE_STRUCT_MSGHDR_MSG_CONTROL 1" >>confdefs.h+++fi+ac_fn_c_check_member "$LINENO" "struct msghdr" "msg_accrights" "ac_cv_member_struct_msghdr_msg_accrights" "$ac_includes_default"+if test "x$ac_cv_member_struct_msghdr_msg_accrights" = xyes+then :++printf '%s\n' "#define HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS 1" >>confdefs.h+++fi++ac_fn_c_check_member "$LINENO" "struct sockaddr" "sa_len" "ac_cv_member_struct_sockaddr_sa_len" "$ac_includes_default"+if test "x$ac_cv_member_struct_sockaddr_sa_len" = xyes+then :++printf '%s\n' "#define HAVE_STRUCT_SOCKADDR_SA_LEN 1" >>confdefs.h+++fi+++{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating ./network.buildinfo" >&5+printf '%s\n' "$as_me: creating ./network.buildinfo" >&6;}+echo "install-includes: HsNetworkConfig.h" > network.buildinfo++cat >confcache <<\_ACEOF+# This file is a shell script that caches the results of configure+# tests run on this system so they can be shared between configure+# scripts and configure runs, see configure's option --config-cache.+# It is not useful on other systems. If it contains results you don't+# want to keep, you may remove or edit it.+#+# config.status only pays attention to the cache file if you give it+# the --recheck option to rerun configure.+#+# 'ac_cv_env_foo' variables (set or unset) will be overridden when+# loading this file, other *unset* 'ac_cv_foo' will be assigned the+# following values.++_ACEOF++ac_cache_dump |+ sed '+ /^ac_cv_env_/b end+ t clear+ :clear+ s/^\([^=]*\)=\(.*[{}].*\)$/test ${\1+y} || &/+ t end+ s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/+ :end' >>confcache+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else+ if test -w "$cache_file"; then+ if test "x$cache_file" != "x/dev/null"; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5+printf '%s\n' "$as_me: updating cache $cache_file" >&6;}+ if test ! -f "$cache_file" || test -h "$cache_file"; then+ cat confcache >"$cache_file"+ else+ case $cache_file in #(+ */* | ?:*)+ mv -f confcache "$cache_file"$$ &&+ mv -f "$cache_file"$$ "$cache_file" ;; #(+ *)+ mv -f confcache "$cache_file" ;;+ esac+ fi+ fi+ else+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5+printf '%s\n' "$as_me: not updating unwritable cache $cache_file" >&6;}+ fi+fi+rm -f confcache++test "x$prefix" = xNONE && prefix=$ac_default_prefix+# Let make expand exec_prefix.+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'++DEFS=-DHAVE_CONFIG_H++ac_libobjs=+ac_ltlibobjs=+U=+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue+ # 1. Remove the extension, and $U if already installed.+ ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'+ ac_i=`printf '%s\n' "$ac_i" | sed "$ac_script"`+ # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR+ # will be set to the directory where LIBOBJS objects are built.+ as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"+ as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'+done+LIBOBJS=$ac_libobjs++LTLIBOBJS=$ac_ltlibobjs++++: "${CONFIG_STATUS=./config.status}"+case $CONFIG_STATUS in #(+ -*) :+ CONFIG_STATUS=./$CONFIG_STATUS ;; #(+ */*) :+ ;; #(+ *) :+ CONFIG_STATUS=./$CONFIG_STATUS ;;+esac++ac_write_fail=0+ac_clean_CONFIG_STATUS='"$CONFIG_STATUS"'+{ printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5+printf '%s\n' "$as_me: creating $CONFIG_STATUS" >&6;}+as_write_fail=0+cat >"$CONFIG_STATUS" <<_ASEOF || as_write_fail=1+#! $SHELL+# Generated by $as_me.+# Run this file to recreate the current configuration.+# Compiler output produced by configure, useful for debugging+# configure, is in config.log if it exists.++debug=false+ac_cs_recheck=false+ac_cs_silent=false++SHELL=\${CONFIG_SHELL-$SHELL}+export SHELL+_ASEOF+cat >>"$CONFIG_STATUS" <<\_ASEOF || as_write_fail=1+## -------------------- ##+## M4sh Initialization. ##+## -------------------- ##++# Be more Bourne compatible+DUALCASE=1; export DUALCASE # for MKS sh+if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1+then :+ emulate sh+ NULLCMD=:+ # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which+ # contradicts POSIX and common usage. Disable this.+ alias -g '${1+"$@"}'='"$@"'+ setopt NO_GLOB_SUBST+else case e in #(+ e) case `(set -o) 2>/dev/null` in #(+ *posix*) :+ set -o posix ;; #(+ *) :+ ;;+esac ;;+esac+fi++++# Reset variables that may have inherited troublesome values from+# the environment.++# IFS needs to be set, to space, tab, and newline, in precisely that order.+# (If _AS_PATH_WALK were called with IFS unset, it would have the+# side effect of setting IFS to empty, thus disabling word splitting.)+# Quoting is to prevent editors from complaining about space-tab.+as_nl='+'+export as_nl+IFS=" "" $as_nl"++PS1='$ '+PS2='> '+PS4='+ '++# Ensure predictable behavior from utilities with locale-dependent output.+LC_ALL=C+export LC_ALL+LANGUAGE=C+export LANGUAGE++# We cannot yet rely on "unset" to work, but we need these variables+# to be unset--not just set to an empty or harmless value--now, to+# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh). This construct+# also avoids known problems related to "unset" and subshell syntax+# in other old shells (e.g. bash 2.01 and pdksh 5.2.14).+for as_var in BASH_ENV ENV MAIL MAILPATH CDPATH+do eval test \${$as_var+y} \+ && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :+done++# Ensure that fds 0, 1, and 2 are open.+if (exec 3>&0) 2>/dev/null; then :; else exec 0</dev/null; fi+if (exec 3>&1) 2>/dev/null; then :; else exec 1>/dev/null; fi+if (exec 3>&2) ; then :; else exec 2>/dev/null; fi++# The user is always right.+if ${PATH_SEPARATOR+false} :; then+ PATH_SEPARATOR=:+ (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {+ (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||+ PATH_SEPARATOR=';'+ }+fi+++# Find who we are. Look in the path if we contain no directory separator.+as_myself=+case $0 in #((+ *[\\/]* ) as_myself=$0 ;;+ *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+ IFS=$as_save_IFS+ case $as_dir in #(((+ '') as_dir=./ ;;+ */) ;;+ *) as_dir=$as_dir/ ;;+ esac+ test -r "$as_dir$0" && as_myself=$as_dir$0 && break+ done+IFS=$as_save_IFS++ ;;+esac+# We did not find ourselves, most probably we were run as 'sh COMMAND'+# in which case we are not to be found in the path.+if test "x$as_myself" = x; then+ as_myself=$0+fi+if test ! -f "$as_myself"; then+ printf '%s\n' "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2+ exit 1+fi++++# as_fn_error STATUS ERROR [LINENO LOG_FD]+# ----------------------------------------+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the+# script with STATUS, using 1 if that was 0.+as_fn_error ()+{+ as_status=$1; test $as_status -eq 0 && as_status=1+ if test "$4"; then+ as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack+ printf '%s\n' "$as_me:${as_lineno-$LINENO}: error: $2" >&$4+ fi+ printf '%s\n' "$as_me: error: $2" >&2+ as_fn_exit $as_status+} # as_fn_error+++# as_fn_set_status STATUS+# -----------------------+# Set $? to STATUS, without forking.+as_fn_set_status ()+{+ return $1+} # as_fn_set_status++# as_fn_exit STATUS+# -----------------+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.+as_fn_exit ()+{+ set +e+ as_fn_set_status $1+ exit $1+} # as_fn_exit++# as_fn_unset VAR+# ---------------+# Portably unset VAR.+as_fn_unset ()+{+ { eval $1=; unset $1;}+}+as_unset=as_fn_unset++# as_fn_append VAR VALUE+# ----------------------+# Append the text in VALUE to the end of the definition contained in VAR. Take+# advantage of any shell optimizations that allow amortized linear growth over+# repeated appends, instead of the typical quadratic growth present in naive+# implementations.+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null+then :+ eval 'as_fn_append ()+ {+ eval $1+=\$2+ }'+else case e in #(+ e) as_fn_append ()+ {+ eval $1=\$$1\$2+ } ;;+esac+fi # as_fn_append++# as_fn_arith ARG...+# ------------------+# Perform arithmetic evaluation on the ARGs, and store the result in the+# global $as_val. Take advantage of shells that can avoid forks. The arguments+# must be portable across $(()) and expr.+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null+then :+ eval 'as_fn_arith ()+ {+ as_val=$(( $* ))+ }'+else case e in #(+ e) as_fn_arith ()+ {+ as_val=`expr "$@" || test $? -eq 1`+ } ;;+esac+fi # as_fn_arith+++if expr a : '\(a\)' >/dev/null 2>&1 &&+ test "X`expr 00001 : '.*\(...\)'`" = X001; then+ as_expr=expr+else+ as_expr=false+fi++if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then+ as_basename=basename+else+ as_basename=false+fi++if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then+ as_dirname=dirname+else+ as_dirname=false+fi++as_me=`$as_basename -- "$0" ||+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \+ X"$0" : 'X\(//\)$' \| \+ X"$0" : 'X\(/\)' \| . 2>/dev/null ||+printf '%s\n' X/"$0" |+ sed '/^.*\/\([^/][^/]*\)\/*$/{+ s//\1/+ q+ }+ /^X\/\(\/\/\)$/{+ s//\1/+ q+ }+ /^X\/\(\/\).*/{+ s//\1/+ q+ }+ s/.*/./; q'`++# Avoid depending upon Character Ranges.+as_cr_letters='abcdefghijklmnopqrstuvwxyz'+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'+as_cr_Letters=$as_cr_letters$as_cr_LETTERS+as_cr_digits='0123456789'+as_cr_alnum=$as_cr_Letters$as_cr_digits++rm -f conf$$ conf$$.exe conf$$.file+if test -d conf$$.dir; then+ rm -f conf$$.dir/conf$$.file+else+ rm -f conf$$.dir+ mkdir conf$$.dir 2>/dev/null+fi+if (echo >conf$$.file) 2>/dev/null; then+ if ln -s conf$$.file conf$$ 2>/dev/null; then+ as_ln_s='ln -s'+ # ... but there are two gotchas:+ # 1) On MSYS, both 'ln -s file dir' and 'ln file dir' fail.+ # 2) DJGPP < 2.04 has no symlinks; 'ln -s' creates a wrapper executable.+ # In both cases, we have to default to 'cp -pR'.+ ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||+ as_ln_s='cp -pR'+ elif ln conf$$.file conf$$ 2>/dev/null; then+ as_ln_s=ln+ else+ as_ln_s='cp -pR'+ fi+else+ as_ln_s='cp -pR'+fi+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file+rmdir conf$$.dir 2>/dev/null+++# as_fn_mkdir_p+# -------------+# Create "$as_dir" as a directory, including parents if necessary.+as_fn_mkdir_p ()+{++ case $as_dir in #(+ -*) as_dir=./$as_dir;;+ esac+ test -d "$as_dir" || eval $as_mkdir_p || {+ as_dirs=+ while :; do+ case $as_dir in #(+ *\'*) as_qdir=`printf '%s\n' "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(+ *) as_qdir=$as_dir;;+ esac+ as_dirs="'$as_qdir' $as_dirs"+ as_dir=`$as_dirname -- "$as_dir" ||+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \+ X"$as_dir" : 'X\(//\)[^/]' \| \+ X"$as_dir" : 'X\(//\)$' \| \+ X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||+printf '%s\n' X"$as_dir" |+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{+ s//\1/+ q+ }+ /^X\(\/\/\)[^/].*/{+ s//\1/+ q+ }+ /^X\(\/\/\)$/{+ s//\1/+ q+ }+ /^X\(\/\).*/{+ s//\1/+ q+ }+ s/.*/./; q'`+ test -d "$as_dir" && break+ done+ test -z "$as_dirs" || eval "mkdir $as_dirs"+ } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"+++} # as_fn_mkdir_p+if mkdir -p . 2>/dev/null; then+ as_mkdir_p='mkdir -p "$as_dir"'+else+ test -d ./-p && rmdir ./-p+ as_mkdir_p=false+fi+++# as_fn_executable_p FILE+# -----------------------+# Test if FILE is an executable regular file.+as_fn_executable_p ()+{+ test -f "$1" && test -x "$1"+} # as_fn_executable_p+as_test_x='test -x'+as_executable_p=as_fn_executable_p++# Sed expression to map a string onto a valid CPP name.+as_sed_cpp="y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g"+as_tr_cpp="eval sed '$as_sed_cpp'" # deprecated++# Sed expression to map a string onto a valid variable name.+as_sed_sh="y%*+%pp%;s%[^_$as_cr_alnum]%_%g"+as_tr_sh="eval sed '$as_sed_sh'" # deprecated+++exec 6>&1+## ------------------------------------- ##+## Main body of "$CONFIG_STATUS" script. ##+## ------------------------------------- ##+_ASEOF+test $as_write_fail = 0 && chmod +x "$CONFIG_STATUS" || ac_write_fail=1++cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1+# Save the log message, to keep $0 and so on meaningful, and to+# report actual input values of CONFIG_FILES etc. instead of their+# values after options handling.+ac_log="+This file was extended by Haskell network package $as_me 3.2.7.0, which was+generated by GNU Autoconf 2.73. Invocation command line was++ CONFIG_FILES = $CONFIG_FILES+ CONFIG_HEADERS = $CONFIG_HEADERS+ CONFIG_LINKS = $CONFIG_LINKS+ CONFIG_COMMANDS = $CONFIG_COMMANDS+ $ $0 $@++on `(hostname || uname -n) 2>/dev/null | sed 1q`+"++_ACEOF+++case $ac_config_headers in *"+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;+esac+++cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1+# Files that config.status was made for.+config_headers="$ac_config_headers"++_ACEOF++cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1+ac_cs_usage="\+'$as_me' instantiates files and other configuration actions+from templates according to the current configuration. Unless the files+and actions are specified as TAGs, all are instantiated by default.++Usage: $0 [OPTION]... [TAG]...++ -h, --help print this help, then exit+ -V, --version print version number and configuration settings, then exit+ --config print configuration, then exit+ -q, --quiet, --silent+ do not print progress messages+ -d, --debug don't remove temporary files+ --recheck update $as_me by reconfiguring in the same conditions+ --header=FILE[:TEMPLATE]+ instantiate the configuration header FILE++Configuration headers:+$config_headers++Report bugs to <libraries@haskell.org>."++_ACEOF+ac_cs_config=`printf '%s\n' "$ac_configure_args" | sed "$ac_safe_unquote"`+ac_cs_config_escaped=`printf '%s\n' "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\''/g"`+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1+ac_cs_config='$ac_cs_config_escaped'+ac_cs_version="\\+Haskell network package config.status 3.2.7.0+configured by $0, generated by GNU Autoconf 2.73,+ with options \\"\$ac_cs_config\\"++Copyright (C) 2026 Free Software Foundation, Inc.+This config.status script is free software; the Free Software Foundation+gives unlimited permission to copy, distribute and modify it."++ac_pwd='$ac_pwd'+srcdir='$srcdir'+test -n "\$AWK" || {+ awk '' </dev/null ||+ as_fn_error \$? "try installing gawk"+ AWK=awk+}+_ACEOF++cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1+# The default lists apply if the user does not specify any file.+ac_need_defaults=:+while test $# != 0+do+ case $1 in+ --*=?*)+ ac_option=`expr "X$1" : 'X\([^=]*\)='`+ ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`+ ac_shift=:+ ;;+ --*=)+ ac_option=`expr "X$1" : 'X\([^=]*\)='`+ ac_optarg=+ ac_shift=:+ ;;+ *)+ ac_option=$1+ ac_optarg=$2+ ac_shift=shift+ ;;+ esac++ case $ac_option in+ # Handling of the options.+ -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)+ ac_cs_recheck=: ;;+ --version | --versio | --versi | --vers | --ver | --ve | --v | -V )+ printf '%s\n' "$ac_cs_version"; exit ;;+ --config | --confi | --conf | --con | --co | --c )+ printf '%s\n' "$ac_cs_config"; exit ;;+ --debug | --debu | --deb | --de | --d | -d )+ debug=: ;;+ --header | --heade | --head | --hea )+ $ac_shift+ case $ac_optarg in+ *\'*) ac_optarg=`printf '%s\n' "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;+ esac+ as_fn_append CONFIG_HEADERS " '$ac_optarg'"+ ac_need_defaults=false;;+ --he | --h)+ # Conflict between --help and --header+ as_fn_error $? "ambiguous option: '$1'+Try '$0 --help' for more information.";;+ --help | --hel | -h )+ printf '%s\n' "$ac_cs_usage"; exit ;;+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \+ | -silent | --silent | --silen | --sile | --sil | --si | --s)+ ac_cs_silent=: ;;++ # This is an error.+ -*) as_fn_error $? "unrecognized option: '$1'+Try '$0 --help' for more information." ;;++ *) as_fn_append ac_config_targets " $1"+ ac_need_defaults=false ;;++ esac+ shift+done++ac_configure_extra_args=++if $ac_cs_silent; then+ exec 6>/dev/null+ ac_configure_extra_args="$ac_configure_extra_args --silent"+fi++_ACEOF+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1+if \$ac_cs_recheck; then+ set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion+ shift+ \printf '%s\n' "running CONFIG_SHELL=$SHELL \$*" >&6+ CONFIG_SHELL='$SHELL'+ export CONFIG_SHELL+ exec "\$@"+fi++_ACEOF+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1+exec 5>>config.log+{+ echo+ sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX+## Running $as_me. ##+_ASBOX+ printf '%s\n' "$ac_log"+} >&5++_ACEOF+cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1+_ACEOF++cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1++# Handling of arguments.+for ac_config_target in $ac_config_targets+do+ case $ac_config_target in+ "include/HsNetworkConfig.h") CONFIG_HEADERS="$CONFIG_HEADERS include/HsNetworkConfig.h" ;;++ *) as_fn_error $? "invalid argument: '$ac_config_target'" "$LINENO" 5;;+ esac+done+++# If the user did not use the arguments to specify the items to instantiate,+# then the envvar interface is used. Set only those that are not.+# We use the long form for the default assignment because of an extremely+# bizarre bug on SunOS 4.1.3.+if $ac_need_defaults; then+ test ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$config_headers+fi++# Have a temporary directory for convenience. Make it in the build tree+# simply because there is no reason against having it here, and in addition,+# creating and moving files from /tmp can sometimes cause problems.+# Hook for its removal unless debugging.+# Note that there is a small window in which the directory will not be cleaned:+# after its creation but before its name has been assigned to '$tmp'.+$debug ||+{+ tmp= ac_tmp=+ trap 'exit_status=$?+ : "${ac_tmp:=$tmp}"+ { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status+' 0+ trap 'as_fn_exit 1' 1 2 13 15+}+# Create a (secure) tmp directory for tmp files.++{+ tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&+ test -d "$tmp"+} ||+{+ tmp=./conf$$-$RANDOM+ (umask 077 && mkdir "$tmp")+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5+ac_tmp=$tmp++# Set up the scripts for CONFIG_HEADERS section.+# No need to generate them if there are no CONFIG_HEADERS.+# This happens for instance with './config.status Makefile'.+if test -n "$CONFIG_HEADERS"; then+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||+BEGIN {+_ACEOF++# Transform confdefs.h into an awk script 'defines.awk', embedded as+# here-document in config.status, that substitutes the proper values into+# config.h.in to produce config.h.++# Create a delimiter string that does not exist in confdefs.h, to ease+# handling of long lines.+ac_delim='%!_!# '+for ac_last_try in false false :; do+ ac_tt=`sed -n "/$ac_delim/p" confdefs.h`+ if test -z "$ac_tt"; then+ break+ elif $ac_last_try; then+ as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5+ else+ ac_delim="$ac_delim!$ac_delim _$ac_delim!! "+ fi+done++# For the awk script, D is an array of macro values keyed by name,+# likewise P contains macro parameters if any. Preserve backslash+# newline sequences.++ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*+sed -n '+s/.\{148\}/&'"$ac_delim"'/g+t rset+:rset+s/^[ ]*#[ ]*define[ ][ ]*/ /+t def+d+:def+s/\\$//+t bsnl+s/["\\]/\\&/g+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\+D["\1"]=" \3"/p+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2"/p+d+:bsnl+s/["\\]/\\&/g+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\+D["\1"]=" \3\\\\\\n"\\/p+t cont+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p+t cont+d+:cont+n+s/.\{148\}/&'"$ac_delim"'/g+t clear+:clear+s/\\$//+t bsnlc+s/["\\]/\\&/g; s/^/"/; s/$/"/p+d+:bsnlc+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p+b cont+' <confdefs.h | sed '+s/'"$ac_delim"'/"\\\+"/g' >>"$CONFIG_STATUS" || ac_write_fail=1++cat >>"$CONFIG_STATUS" <<_ACEOF || ac_write_fail=1+ for (key in D) D_is_set[key] = 1+ FS = ""+}+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {+ line = \$ 0+ split(line, arg, " ")+ if (arg[1] == "#") {+ defundef = arg[2]+ mac1 = arg[3]+ } else {+ defundef = substr(arg[1], 2)+ mac1 = arg[2]+ }+ split(mac1, mac2, "(") #)+ macro = mac2[1]+ prefix = substr(line, 1, index(line, defundef) - 1)+ if (D_is_set[macro]) {+ suffix = P[macro] D[macro]+ while (suffix ~ /[\t ]$/) {+ suffix = substr(suffix, 1, length(suffix) - 1)+ }+ # Preserve the white space surrounding the "#".+ print prefix "define", macro suffix+ next+ } else {+ # Replace #undef with comments. This is necessary, for example,+ # in the case of _POSIX_SOURCE, which is predefined and required+ # on some systems where configure will not decide to define it.+ if (defundef == "undef") {+ print "/*", prefix defundef, macro, "*/"+ next+ }+ }+}+{ print }+_ACAWK+_ACEOF+cat >>"$CONFIG_STATUS" <<\_ACEOF || ac_write_fail=1+ as_fn_error $? "could not setup config headers machinery" "$LINENO" 5+fi # test -n "$CONFIG_HEADERS"+++eval set X " :H $CONFIG_HEADERS "+shift+for ac_tag+do+ case $ac_tag in+ :[FHLC]) ac_mode=$ac_tag; continue;;+ esac+ case $ac_mode$ac_tag in+ :[FHL]*:*);;+ :L* | :C*:*) as_fn_error $? "invalid tag '$ac_tag'" "$LINENO" 5;;+ :[FH]-) ac_tag=-:-;;+ :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;+ esac+ ac_save_IFS=$IFS+ IFS=:+ set x $ac_tag+ IFS=$ac_save_IFS+ shift+ ac_file=$1+ shift++ case $ac_mode in+ :L) ac_source=$1;;+ :[FH])+ ac_file_inputs=+ for ac_f+ do+ case $ac_f in+ -) ac_f="$ac_tmp/stdin";;+ *) # Look for the file first in the build tree, then in the source tree+ # (if the path is not absolute). The absolute path cannot be DOS-style,+ # because $ac_f cannot contain ':'.+ test -f "$ac_f" ||+ case $ac_f in+ [\\/$]*) false;;+ *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;+ esac ||+ as_fn_error 1 "cannot find input file: '$ac_f'" "$LINENO" 5;;+ esac+ case $ac_f in *\'*) ac_f=`printf '%s\n' "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac+ as_fn_append ac_file_inputs " '$ac_f'"+ done++ # Let's still pretend it is 'configure' which instantiates (i.e., don't+ # use $as_me), people would be surprised to read:+ # /* config.h. Generated by config.status. */+ configure_input='Generated from '`+ printf '%s\n' "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'+ `' by configure.'+ if test x"$ac_file" != x-; then+ configure_input="$ac_file. $configure_input"+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5+printf '%s\n' "$as_me: creating $ac_file" >&6;}+ fi+ # Neutralize special characters interpreted by sed in replacement strings.+ case $configure_input in #(+ *\&* | *\|* | *\\* )+ ac_sed_conf_input=`printf '%s\n' "$configure_input" |+ sed 's/[\\\\&|]/\\\\&/g'`;; #(+ *) ac_sed_conf_input=$configure_input;;+ esac++ case $ac_tag in+ *:-:* | *:-) cat >"$ac_tmp/stdin" \+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;+ esac+ ;;+ esac++ ac_dir=`$as_dirname -- "$ac_file" ||+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \+ X"$ac_file" : 'X\(//\)[^/]' \| \+ X"$ac_file" : 'X\(//\)$' \| \+ X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||+printf '%s\n' X"$ac_file" |+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{+ s//\1/+ q+ }+ /^X\(\/\/\)[^/].*/{+ s//\1/+ q+ }+ /^X\(\/\/\)$/{+ s//\1/+ q+ }+ /^X\(\/\).*/{+ s//\1/+ q+ }+ s/.*/./; q'`+ as_dir="$ac_dir"; as_fn_mkdir_p+ ac_builddir=.++case "$ac_dir" in+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;+*)+ ac_dir_suffix=/`printf '%s\n' "$ac_dir" | sed 's|^\.[\\/]||'`+ # A ".." for each directory in $ac_dir_suffix.+ ac_top_builddir_sub=`printf '%s\n' "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`+ case $ac_top_builddir_sub in+ "") ac_top_builddir_sub=. ac_top_build_prefix= ;;+ *) ac_top_build_prefix=$ac_top_builddir_sub/ ;;+ esac ;;+esac+ac_abs_top_builddir=$ac_pwd+ac_abs_builddir=$ac_pwd$ac_dir_suffix+# for backward compatibility:+ac_top_builddir=$ac_top_build_prefix++case $srcdir in+ .) # We are building in place.+ ac_srcdir=.+ ac_top_srcdir=$ac_top_builddir_sub+ ac_abs_top_srcdir=$ac_pwd ;;+ [\\/]* | ?:[\\/]* ) # Absolute name.+ ac_srcdir=$srcdir$ac_dir_suffix;+ ac_top_srcdir=$srcdir+ ac_abs_top_srcdir=$srcdir ;;+ *) # Relative name.+ ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix+ ac_top_srcdir=$ac_top_build_prefix$srcdir+ ac_abs_top_srcdir=$ac_pwd/$srcdir ;;+esac+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix+++ case $ac_mode in++ :H)+ #+ # CONFIG_HEADER+ #+ if test x"$ac_file" != x-; then+ {+ printf '%s\n' "/* $configure_input */" >&1 \+ && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"+ } >"$ac_tmp/config.h" \+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5+ if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5+printf '%s\n' "$as_me: $ac_file is unchanged" >&6;}+ else+ rm -f "$ac_file"+ mv "$ac_tmp/config.h" "$ac_file" \+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5+ fi+ else+ printf '%s\n' "/* $configure_input */" >&1 \+ && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \+ || as_fn_error $? "could not create -" "$LINENO" 5+ fi+ ;;+++ esac++done # for ac_tag+++as_fn_exit 0+_ACEOF+ac_clean_CONFIG_STATUS=++test $ac_write_fail = 0 ||+ as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5+++# configure is writing to config.log, and then calls config.status.+# config.status does its own redirection, appending to config.log.+# Unfortunately, on DOS this fails, as config.log is still kept open+# by configure, so config.status won't be able to write to it; its+# output is simply discarded. So we exec the FD to /dev/null,+# effectively closing config.log, so it can be properly (re)opened and+# appended to by config.status. When coming back to configure, we+# need to make the FD available again.+if test "$no_create" != yes; then+ ac_cs_success=:+ case $CONFIG_STATUS in #(+ -*) :+ ac_no_opts=-- ;; #(+ *) :+ ac_no_opts= ;;+esac+ ac_config_status_args=+ test "$silent" = yes &&+ ac_config_status_args="$ac_config_status_args --quiet"+ exec 5>/dev/null+ $SHELL $ac_no_opts "$CONFIG_STATUS" $ac_config_status_args ||+ ac_cs_success=false+ exec 5>>config.log+ # Use ||, not &&, to avoid exiting from the if with $? = 1, which+ # would make configure fail if this is the last instruction.+ $ac_cs_success || as_fn_exit 1+fi+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then+ { printf '%s\n' "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5+printf '%s\n' "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} fi
network.cabal view
@@ -1,6 +1,6 @@ cabal-version: 1.18 name: network-version: 3.2.9.0+version: 3.2.10.0 license: BSD3 license-file: LICENSE maintainer: Kazu Yamamoto, Tamar Christina@@ -121,6 +121,7 @@ Network.Socket.Syscall Network.Socket.Types Network.Socket.Unix+ Network.Socket.Wait default-language: Haskell2010 include-dirs: include@@ -141,6 +142,7 @@ Network.Socket.ByteString.Lazy.Posix Network.Socket.Posix.Cmsg Network.Socket.Posix.CmsgHdr+ Network.Socket.Posix.HostName Network.Socket.Posix.IOVec Network.Socket.Posix.MsgHdr @@ -159,8 +161,10 @@ other-modules: Network.Socket.ByteString.Lazy.Windows+ Network.Socket.Win32.Cancel Network.Socket.Win32.Cmsg Network.Socket.Win32.CmsgHdr+ Network.Socket.Win32.HostName Network.Socket.Win32.WSABuf Network.Socket.Win32.MsgHdr @@ -174,7 +178,8 @@ cc-options: -D_WIN32_WINNT=0x0600 build-depends:- temporary+ temporary,+ Win32 >=2.12.0.1 if impl(ghc >=8) default-extensions: Strict StrictData@@ -198,6 +203,7 @@ directory, HUnit, network,+ stm, temporary, hspec >=2.6, QuickCheck
tests/Network/SocketSpec.hs view
@@ -4,8 +4,11 @@ module Network.SocketSpec (main, spec) where import Control.Concurrent (threadDelay, forkIO)-import Control.Concurrent.MVar (readMVar)+import Control.Concurrent.MVar (newEmptyMVar, putMVar, readMVar, takeMVar)+import Control.Exception (bracket)+import Control.Concurrent.STM import Control.Monad+import Data.ByteString (ByteString) import Data.Maybe (fromJust) import Data.List (nub) import Network.Socket@@ -23,6 +26,33 @@ main :: IO () main = hspec spec +-- Send through the given action to a port nobody has bound, then receive+-- on the same socket. 'Nothing' if the receive heard nothing in time.+bounce :: (Socket -> SockAddr -> IO ()) -> IO (Maybe ByteString)+bounce send' = do+ dead <- deadPort+ sock <- socket AF_INET Datagram defaultProtocol+ bind sock $ SockAddrInet 0 localhost+ send' sock dead+ -- Long enough for the unreachable to come back before the receive.+ waitFor 300000+ late <- registerDelay 300000+ r <- recvFromWith sock 2048 $ check =<< readTVar late+ close sock+ return $ either (const Nothing) (Just . fst) r+ where+ localhost = tupleToHostAddress (127, 0, 0, 1)+ waitFor us = do+ late <- registerDelay us+ atomically $ check =<< readTVar late+ -- Bind a port, read it, and let it go again.+ deadPort = do+ s <- socket AF_INET Datagram defaultProtocol+ bind s $ SockAddrInet 0 localhost+ sa <- getSocketName s+ close s+ return sa+ spec :: Spec spec = do describe "connect" $ do@@ -101,6 +131,13 @@ getSocketOption sock UserTimeout `shouldReturn` 2000 close sock + describe "DontFragment" $ do+ it "can be set" $ do+ sock <- socket AF_INET Stream defaultProtocol+ when (isSupportedSocketOption DontFragment) $+ setSocketOption sock DontFragment 1+ close sock+ describe "getAddrInfo" $ do it "works for IPv4 address" $ do let hints = defaultHints { addrFlags = [AI_NUMERICHOST, AI_ADDRCONFIG] }@@ -243,11 +280,23 @@ -} #endif + -- A send to a port nobody has bound brings an ICMP unreachable back.+ -- POSIX hands it to the sender only once the socket is connected, and+ -- Winsock hands it to every datagram socket; a reply bouncing off a+ -- client which has gone would then end a server's receive loop.+ describe "an ICMP unreachable from a send of one's own" $ do+ it "is not heard by a socket which was never connected" $+ bounce (\sock dead -> void $ sendTo sock "bounce" dead)+ `shouldReturn` Nothing+ it "is heard by a connected one" $+ bounce (\sock dead -> connect sock dead >> void (send sock "bounce"))+ `shouldThrow` anyIOException+ describe "gracefulClose" $ do it "does not send TCP RST back" $ do let server sock = do void $ recv sock 1024 -- receiving "GOAWAY"- gracefulClose sock 3000+ gracefulClose sock 300 client sock = do sendAll sock "GOAWAY" threadDelay 10000@@ -256,6 +305,62 @@ void $ recv sock 1024 tcpTest client server + describe "giving up" $ do+ it "ends a receive which is told to stop, leaving the socket usable" $ do+ let server sock = do+ stop <- newTVarIO False+ done <- newEmptyMVar+ void $ forkIO $ do+ r <- recvWith sock 1024 (check =<< readTVar stop)+ putMVar done r+ threadDelay 100000+ atomically $ writeTVar stop True+ takeMVar done `shouldReturn` Left ()+ -- Nothing was closed, so the socket is still the+ -- caller's to read.+ recv sock 1024 `shouldReturn` testMsg+ client sock = do+ threadDelay 300000+ void $ send sock testMsg+ tcpTest client server++ -- A tie goes to the data: answering Left would leave bytes+ -- already received unread, which for a stream loses them.+ it "takes what is there even once the caller has given up" $ do+ let server sock = do+ threadDelay 100000+ gone <- newTVarIO True+ recvWith sock 1024 (check =<< readTVar gone)+ `shouldReturn` Right testMsg+ client sock = void $ send sock testMsg+ tcpTest client server++ it "ends an accept which is told to stop, leaving the socket usable" $+ withListener $ \sock port -> do+ stop <- newTVarIO False+ done <- newEmptyMVar+ void $ forkIO $ do+ r <- acceptWith sock (check =<< readTVar stop)+ putMVar done $+ either (const True) (const False)+ (r :: Either () (Socket, SockAddr))+ threadDelay 100000+ atomically $ writeTVar stop True+ takeMVar done `shouldReturn` True+ -- The listening socket was not closed to end that+ -- accept, so it still accepts.+ bracket (socket AF_INET Stream defaultProtocol) close $ \cli -> do+ connect cli $ SockAddrInet port $ tupleToHostAddress (127, 0, 0, 1)+ bracket (fst <$> accept sock) close $ \_ -> return ()++ it "tells a socket closed under an accept from other errors" $ do+ sock <- socket AF_INET Stream defaultProtocol+ bind sock $ SockAddrInet 0 $ tupleToHostAddress (127, 0, 0, 1)+ listen sock 1+ close sock+ r <- tryIOError $ accept sock+ either isClosedSocketError (const False) r `shouldBe` True+ describe "socketToFd" $ do it "socketToFd can send using fd" $ do let server sock = do@@ -402,6 +507,10 @@ it "holds for CmsgId" $ forAll cmsgidGen $ \x -> (read . show $ x) == (x :: CmsgId) + describe "hostname" $ do+ it "is not empty" $ do+ hostname <- getHostName+ hostname `shouldSatisfy` (not . null) -- Type-specific generators with strong bias towards pattern synonyms @@ -478,3 +587,13 @@ , CmsgIdIPv6PktInfo , CmsgIdFds ]++-- A listening socket on the loopback, and the port it got.+withListener :: (Socket -> PortNumber -> IO a) -> IO a+withListener action =+ bracket (socket AF_INET Stream defaultProtocol) close $ \sock -> do+ setSocketOption sock ReuseAddr 1+ bind sock $ SockAddrInet 0 $ tupleToHostAddress (127, 0, 0, 1)+ listen sock 1+ port <- socketPort sock+ action sock port